Twee van de meest voorkomende draadsoorten zijn de British en de Amerikaanse draaden.
Beide lijken er op elkaar maar zijn absolute anders.
| Definities van de verschillende draadsoorten | |
NPT |
National Pipe Thread |
| FPT | Female Pipe Thread |
| MPT | Male Pipe Thread |
| PTF | SAE short tape pipe thread |
| NPTF | American National taper pipe thread for dryseal pressure-tight joints |
| NPSM | American National straight pipe thread for mechanical joints |
| NPSI | American National straight intermediate pipe thread |
British buis draden
BSP draden wordt het meest toegepast. Van de BSP draden zijn twee types:
BSPT (Britisch Standard Pipe Taper) en BSPP (Britisch Standard Pipe Parallel)
BSPP draden zijn rechte (of parallele) draden. Om een verbinding drukvast te krijgen is hierbij een sluitring vereist.
BSPT draden zijn conisch, drukvaste verbindingen worden door de draadzelf gerealiseerd.
Deze draden kunnen ook worden aangeduid met een G (voor recht) en een R (voor conisch). De terminologie voor het gebruik van de G en R kent zijn origine in Duitsland (G voor Gaz (gas), omdat het oorspronkelijk werdt gebruikt voor gas verbindingen; en R for Rohr (ofwel buis).
Zie de onderstaande tabellen voor BSPP en BSPT buis maten en de corresponderende draden per inch.
British Standard Pipe Parallel Threads
BSF en BA
| Parallel Pipe Size | Pipe Diameter Size | Threads Per Inch | Tapping Drill Size |
| G 1/8″ | 0.383″ | 28 | 8.73 mm |
| G 1/4″ | 0.518″ | 19 | 11.8mm |
| G 3/8″ | 0.656″ | 19 | 15.25mm |
| G 1/2″ | 0.825″ | 14 | 19.05mm |
| G 5/8″ | 0.902″ | 14 | 21.0mm |
| G 3/4″ | 1.041″ | 14 | 24.5mm |
| G 1″ | 1.309″ | 11 | 30.75mm |
British Standard Pipe Tapered Threads
NPT
| Tapered Pipe Size | Threads Per Inch | Tapping Drill Size |
| R 1/8″ | 28 | 8.4mm |
| R 1/4″ | 19 | 11.2mm |
| R 3/8″ | 19 | 14.75mm |
| R 1/2″ | 14 | 18.25mm |
| R 3/4″ | 14 | 23.75mm |
| R 1″ | 11 | 30mm |
Amerikaanse pijp draaden
Van de Amerikaanse draden zijn er twee veel voorkomend, de conische standaard (NPT) en de rechte (NPSM). De conische draaden worden gebruikt voor afdichten en koppellen, de rechte draden zijn alleen voor koppellen. The droge afsluitdraad (NPTF) maakt het mogelijk om te koppellen zonder aftedichten.
Er bestaan nog 3 minder gebruikte draaden, de GHT, de NST en de BSPT. de NPT en de NPTF draden zijn uitwisselbaar te gebruiken met afdichters als PTFE tape. Geen van de andere draden zijn zo uitwisselbaar te gebruiken. Female (vrouwelijke) NPT draden kunnen ook omschreven worden als FPT en male (mannelijke) NPT draden kunnen omschreven worden als MPT.
Buis maten refereren niet aan fysieke dimenties. De buiten diameter van elke buis of fitting moet gemeten en vergeleken worden met de tabel ter indentificatie.
Voorbeeld, een 3/4″NPT buis draad heeft een buiten diameter van 1.050 inch. Elke draad maat heeft een vast aantal draaden per inch (TPI). De 3/4″NPT buis draad heeft 14 draden per inch. Voor zowel TPI als de OD van de draad zijn benodigd voor indentificatie van de draad maat omdat verschillende maten dezelfde TPI hebben.
| NPT Taper Thread | Actual Diameter | Threads per inch | Tapping Drill Size |
| 1/8 “ | 0.405″ | 27 | R |
| 1/4 “ | 0.540″ | 18 | 7/16″ |
| 3/8 “ | 0.675″ | 18 | 37/64″ |
| 1/2 “ | 0.840″ | 14 | 23/32″ |
| 3/4 “ | 1.050″ | 14 | 59/64″ |
| 1 “ | 1.315″ | 11½ | 1- 5/32″ |
| NPS Straight Thread | Actual Diameter | Threads per inch | Tapping Drill Size |
| 1/8 “ | 0.405″ | 27 | S |
| 1/4 “ | 0.540″ | 18 | 29/64″ |
| 3/8 “ | 0.675″ | 18 | 19/32″ |
| 1/2 “ | 0.840″ | 14 | 47/64″ |
| 3/4 “ | 1.050″ | 14 | 15/16″ |
| 1 “ | 1.315″ | 11½ | 1- 3/16″ |
De verschillende schroefdraden
Gesorteerd op diameter gevolgd door pitch
| Series | Nominal Size |
Major Dia in |
Major Dia mm | Pitch tpi |
Pitch mm |
Bolt A/F in |
Bolt A/F mm |
| BA | 25 BA | 0.00984 | 0.25000 | 0.0700 | 0.0172 | 0.4375 | |
| BA | 24 BA | 0.01142 | 0.29000 | 0.0800 | 0.0200 | 0.5075 | |
| BA | 23 BA | 0.01299 | 0.33000 | 0.0900 | 0.0227 | 0.5775 | |
| BA | 22 BA | 0.01457 | 0.37000 | 0.1000 | 0.0255 | 0.6475 | |
| BA | 21 BA | 0.01654 | 0.42000 | 0.1100 | 0.0289 | 0.735 | |
| BA | 20 BA | 0.01890 | 0.48000 | 0.1200 | 0.0331 | 0.84 | |
| BA | 19 BA | 0.02126 | 0.54000 | 0.1400 | 0.0372 | 0.945 | |
| BA | 18 BA | 0.02441 | 0.62000 | 0.1500 | 0.0427 | 1.085 | |
| BA | 17 BA | 0.02756 | 0.70000 | 0.1700 | 0.0482 | 1.225 | |
| BA | 16 BA | 0.03110 | 0.79000 | 0.1900 | 0.0544 | 1.3825 | |
| BA | 15 BA | 0.03543 | 0.90000 | 0.2100 | 0.0620 | 1.575 | |
| Metric Fine | M1 | 1.00000 | 0.2000 | ||||
| BA | 14 BA | 0.03937 | 1.00000 | 0.2300 | 0.0689 | 1.75 | |
| Metric Coarse | M1 | 1.00000 | 0.2500 | ||||
| Metric Fine | M1.1 | 1.10000 | 0.2000 | ||||
| Metric Coarse | M1.1 | 1.10000 | 0.2500 | ||||
| Metric Fine | M1.2 | 1.20000 | 0.2000 | ||||
| BA | 13 BA | 0.04724 | 1.20000 | 0.2500 | 0.0827 | 2.1 | |
| Metric Coarse | M1.2 | 1.20000 | 0.2500 | ||||
| BA | 12 BA | 0.05118 | 1.30000 | 0.2800 | 0.0896 | 2.275 | |
| Metric Fine | M1.4 | 1.40000 | 0.2000 | ||||
| Metric Coarse | M1.4 | 1.40000 | 0.3000 | ||||
| BA | 11 BA | 0.05906 | 1.50000 | 0.3100 | 0.1033 | 2.625 | |
| UNF | 0 UNF | 0.06000 | 1.52400 | 80 | 0.3175 | ||
| BS Whit | 1/16 BSW | 0.06250 | 1.58750 | 60 | 0.4233 | ||
| Metric Fine | M1.6 | 1.60000 | 0.2000 | 3.2 | |||
| Metric Coarse | M1.6 | 1.60000 | 0.3500 | 3.2 | |||
| BA | 10 BA | 0.06693 | 1.70000 | 0.3500 | 0.1171 | 2.975 | |
| Metric Fine | M1.8 | 1.80000 | 0.2000 | ||||
| Metric Coarse | M1.8 | 1.80000 | 0.3500 | ||||
| UNF | 1 UNF | 0.07300 | 1.85420 | 72 | 0.3528 | ||
| UNC | 1 UNC | 0.07300 | 1.85420 | 64 | 0.3969 | ||
| BA | 9 BA | 0.07480 | 1.90000 | 0.3900 | 0.1309 | 3.325 | |
| Metric Fine | M2 | 2.00000 | 0.2500 | 4 | |||
| Metric Coarse | M2 | 2.00000 | 0.4000 | 4 | |||
| UNF | 2 UNF | 0.08600 | 2.18440 | 64 | 0.3969 | ||
| UNC | 2 UNC | 0.08600 | 2.18440 | 56 | 0.4536 | ||
| Metric Fine | M2.2 | 2.20000 | 0.2500 | ||||
| BA | 8 BA | 0.08661 | 2.20000 | 0.4300 | 0.1516 | 3.85 | |
| Metric Coarse | M2.2 | 2.20000 | 0.4500 | ||||
| BS Whit | 3/32 BSW | 0.09375 | 2.38125 | 48 | 0.5292 | ||
| Metric Fine | M2.5 | 2.50000 | 0.3500 | 5 | |||
| Metric Coarse | M2.5 | 2.50000 | 0.4500 | 5 | |||
| BA | 7 BA | 0.09843 | 2.50000 | 0.4800 | 0.1722 | 4.375 | |
| UNF | 3 UNF | 0.09900 | 2.51460 | 56 | 0.4536 | ||
| UNC | 3 UNC | 0.09900 | 2.51460 | 48 | 0.5292 | ||
| BA | 6 BA | 0.11024 | 2.80000 | 0.5300 | 0.1929 | 4.9 | |
| UNF | 4 UNF | 0.11200 | 2.84480 | 48 | 0.5292 | ||
| UNC | 4 UNC | 0.11200 | 2.84480 | 40 | 0.6350 | ||
| Metric Fine | M3 | 3.00000 | 0.3500 | 5.5 | |||
| Metric Coarse | M3 | 3.00000 | 0.5000 | 5.5 | |||
| Whit Sp Fine | 1/8 Fine | 0.12500 | 3.17500 | 60 | 0.4233 | ||
| BS Fine | 1/8 BSF | 0.12500 | 3.17500 | 48 | 0.5292 | ||
| UNF | 5 UNF | 0.12500 | 3.17500 | 44 | 0.5773 | ||
| BS Cycle | 1/8 BSC | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| BS Whit | 1/8 BSW | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| UNC | 5 UNC | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| BS Brass | 1/8 BSB | 0.12500 | 3.17500 | 26 | 0.9769 | ||
| BA | 5 BA | 0.12598 | 3.20000 | 0.5900 | 0.2205 | 5.6 | |
| Metric Fine | M3.5 | 3.50000 | 0.3500 | ||||
| Metric Coarse | M3.5 | 3.50000 | 0.6000 | ||||
| UNF | 6 UNF | 0.13800 | 3.50520 | 40 | 0.6350 | ||
| UNC | 6 UNC | 0.13800 | 3.50520 | 32 | 0.7938 | ||
| BA | 4 BA | 0.14173 | 3.60000 | 0.6600 | 0.2480 | 6.3 | |
| Whit Sp Fine | 5/32 Fine | 0.15625 | 3.96875 | 60 | 0.4233 | ||
| Model Eng | 5/32 ME | 0.15625 | 3.96875 | 40 | 0.6350 | ||
| BS Cycle | 5/32 BSC | 0.15625 | 3.96875 | 32 | 0.7938 | ||
| BS Whit | 5/32 BSW | 0.15625 | 3.96875 | 32 | 0.7938 | ||
| BS Brass | 5/32 BSB | 0.15625 | 3.96875 | 26 | 0.9769 | ||
| Metric Fine | M4 | 4.00000 | 0.5000 | 7 | |||
| Metric Coarse | M4 | 4.00000 | 0.7000 | 7 | |||
| BA | 3 BA | 0.16142 | 4.10000 | 0.7300 | 0.2825 | 7.175 | |
| UNF | 8 UNF | 0.16400 | 4.16560 | 36 | 0.7056 | ||
| UNC | 8 UNC | 0.16400 | 4.16560 | 32 | 0.7938 | ||
| Metric Fine | M4.5 | 4.50000 | 0.5000 | ||||
| Metric Coarse | M4.5 | 4.50000 | 0.7500 | ||||
| BA | 2 BA | 0.18504 | 4.70000 | 0.8100 | 0.3238 | 8.225 | |
| Whit Sp Fine | 3/16 Fine | 0.18750 | 4.76250 | 60 | 0.4233 | ||
| Model Eng | 3/16 ME | 0.18750 | 4.76250 | 40 | 0.6350 | ||
| BS Cycle | 3/16 BSC | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| BS Fine | 3/16 BSF | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| Model Eng | 3/16 ME | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| BS Brass | 3/16 BSB | 0.18750 | 4.76250 | 26 | 0.9769 | ||
| BS Whit | 3/16 BSW | 0.18750 | 4.76250 | 24 | 1.0583 | ||
| UNF | 10 UNF | 0.19000 | 4.82600 | 32 | 0.7938 | ||
| UNC | 10 UNC | 0.19000 | 4.82600 | 24 | 1.0583 | ||
| Metric Fine | M5 | 5.00000 | 0.5000 | 8 | |||
| Metric Coarse | M5 | 5.00000 | 0.8000 | 8 | |||
| BA | 1 BA | 0.20866 | 5.30000 | 0.9000 | 0.3652 | 9.275 | |
| UNEF | 12 UNEF | 0.21600 | 5.48640 | 32 | 0.7938 | ||
| UNF | 12 UNF | 0.21600 | 5.48640 | 28 | 0.9071 | ||
| UNC | 12 UNC | 0.21600 | 5.48640 | 24 | 1.0583 | ||
| Model Eng | 7/32 ME | 0.21875 | 5.55625 | 40 | 0.6350 | ||
| Model Eng | 7/32 ME | 0.21875 | 5.55625 | 32 | 0.7938 | ||
| BS Fine | 7/32 BSF | 0.21875 | 5.55625 | 28 | 0.9071 | ||
| BS Cycle | 7/32 BSC | 0.21875 | 5.55625 | 26 | 0.9769 | ||
| BS Whit | 7/32 BSW | 0.21875 | 5.55625 | 24 | 1.0583 | ||
| Metric Fine | M6 | 6.00000 | 0.7500 | 10 | |||
| BA | 0 BA | 0.23622 | 6.00000 | 1.0000 | 0.4134 | 10.5 | |
| Metric Coarse | M6 | 6.00000 | 1.0000 | 10 | |||
| Model Eng | 1/4 ME | 0.25000 | 6.35000 | 40 | 0.6350 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 36 | 0.7056 | ||
| Model Eng | 1/4 ME | 0.25000 | 6.35000 | 32 | 0.7938 | ||
| UNEF | 1/4 UNEF | 0.25000 | 6.35000 | 32 | 0.7938 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 30 | 0.8467 | ||
| UNF | 1/4 UNF | 0.25000 | 6.35000 | 28 | 0.9071 | 0.4375 | 11.1125 |
| BS Brass | 1/4 BSB | 0.25000 | 6.35000 | 26 | 0.9769 | ||
| BS Cycle | 1/4 BSC | 0.25000 | 6.35000 | 26 | 0.9769 | ||
| BS Fine | 1/4 BSF | 0.25000 | 6.35000 | 26 | 0.9769 | 0.4450 | 11.303 |
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 25 | 1.0160 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 24 | 1.0583 | ||
| BS Whit | 1/4 BSW | 0.25000 | 6.35000 | 20 | 1.2700 | 0.4450 | 11.303 |
| UNC | 1/4 UNC | 0.25000 | 6.35000 | 20 | 1.2700 | 0.4375 | 11.1125 |
| BS Cycle | 17/64 BSC | 0.26563 | 6.74688 | 26 | 0.9769 | ||
| Metric Fine | M7 | 7.00000 | 0.7500 | ||||
| Metric Coarse | M7 | 7.00000 | 1.0000 | ||||
| Model Eng | 9/32 ME | 0.28125 | 7.14375 | 40 | 0.6350 | ||
| Model Eng | 9/32 ME | 0.28125 | 7.14375 | 32 | 0.7938 | ||
| BS Cycle | 9/32 BSC | 0.28125 | 7.14375 | 26 | 0.9769 | ||
| BS Fine | 9/32 BSF | 0.28125 | 7.14375 | 26 | 0.9769 | ||
| BS Whit | 9/32 BSW | 0.28125 | 7.14375 | 20 | 1.2700 | ||
| Whit Sp | 9/32 Whit | 0.28125 | 7.14375 | 20 | 1.2700 | ||
| BS Pipe | G 1/16 | 0.30400 | 7.72160 | 28 | 0.9071 | ||
| Model Eng | 5/16 ME | 0.31250 | 7.93750 | 40 | 0.6350 | ||
| Model Eng | 5/16 ME | 0.31250 | 7.93750 | 32 | 0.7938 | ||
| UNEF | 5/16 UNEF | 0.31250 | 7.93750 | 32 | 0.7938 | ||
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 30 | 0.8467 | ||
| BS Brass | 5/16 BSB | 0.31250 | 7.93750 | 26 | 0.9769 | ||
| BS Cycle | 5/16 BSC | 0.31250 | 7.93750 | 26 | 0.9769 | ||
| UNF | 5/16 UNF | 0.31250 | 7.93750 | 24 | 1.0583 | 0.5000 | 12.7 |
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 24 | 1.0583 | ||
| BS Fine | 5/16 BSF | 0.31250 | 7.93750 | 22 | 1.1545 | 0.5250 | 13.335 |
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 20 | 1.2700 | ||
| BS Whit | 5/16 BSW | 0.31250 | 7.93750 | 18 | 1.4111 | 0.5250 | 13.335 |
| UNC | 5/16 UNC | 0.31250 | 7.93750 | 18 | 1.4111 | 0.5000 | 12.7 |
| Metric Fine | M8 | 8.00000 | 1.0000 | 13 | |||
| Metric Coarse | M8 | 8.00000 | 1.2500 | 13 | |||
| Metric Coarse | M9 | 9.00000 | 1.2500 | ||||
| Model Eng | 3/8 ME | 0.37500 | 9.52500 | 40 | 0.6350 | ||
| Model Eng | 3/8 ME | 0.37500 | 9.52500 | 32 | 0.7938 | ||
| UNEF | 3/8 UNEF | 0.37500 | 9.52500 | 32 | 0.7938 | ||
| BS Brass | 3/8 BSB | 0.37500 | 9.52500 | 26 | 0.9769 | ||
| BS Cycle | 3/8 BSC | 0.37500 | 9.52500 | 26 | 0.9769 | ||
| UNF | 3/8 UNF | 0.37500 | 9.52500 | 24 | 1.0583 | 0.5625 | 14.2875 |
| Whit Sp | 3/8 Whit | 0.37500 | 9.52500 | 24 | 1.0583 | ||
| BS Fine | 3/8 BSF | 0.37500 | 9.52500 | 20 | 1.2700 | 0.6000 | 15.24 |
| BS Whit | 3/8 BSW | 0.37500 | 9.52500 | 16 | 1.5875 | 0.6000 | 15.24 |
| UNC | 3/8 UNC | 0.37500 | 9.52500 | 16 | 1.5875 | 0.5625 | 14.2875 |
| BS Pipe | G 1/8 | 0.38300 | 9.72820 | 28 | 0.9071 | ||
| Metric Fine | M10 | 10.00000 | 1.2500 | 17 | |||
| Metric Coarse | M10 | 10.00000 | 1.5000 | 17 | |||
| Metric Fine | M11 | 11.00000 | 1.2500 | ||||
| Metric Coarse | M11 | 11.00000 | 1.5000 | ||||
| UNEF | 7/16 UNEF | 0.43750 | 11.11250 | 28 | 0.9071 | ||
| BS Cycle | 7/16 BSC | 0.43750 | 11.11250 | 26 | 0.9769 | ||
| UNF | 7/16 UNF | 0.43750 | 11.11250 | 20 | 1.2700 | 0.6250 | 15.875 |
| BS Fine | 7/16 BSF | 0.43750 | 11.11250 | 18 | 1.4111 | 0.7100 | 18.034 |
| BS Whit | 7/16 BSW | 0.43750 | 11.11250 | 14 | 1.8143 | 0.7100 | 18.034 |
| UNC | 7/16 UNC | 0.43750 | 11.11250 | 14 | 1.8143 | 0.6250 | 15.875 |
| Metric Fine | M12 | 12.00000 | 1.2500 | 19 | |||
| Metric Coarse | M12 | 12.00000 | 1.7500 | 19 | |||
| UNEF | 1/2 UNEF | 0.50000 | 12.70000 | 28 | 0.9071 | ||
| BS Cycle | 1/2 BSC | 0.50000 | 12.70000 | 26 | 0.9769 | ||
| UNF | 1/2 UNF | 0.50000 | 12.70000 | 20 | 1.2700 | 0.7500 | 19.05 |
| BS Fine | 1/2 BSF | 0.50000 | 12.70000 | 16 | 1.5875 | 0.8200 | 20.828 |
| UNC | 1/2 UNC | 0.50000 | 12.70000 | 13 | 1.9538 | 0.7500 | 19.05 |
| BS Whit | 1/2 BSW | 0.50000 | 12.70000 | 12 | 2.1167 | 0.8200 | 20.828 |
| BS Pipe | G 1/4 | 0.51800 | 13.15720 | 19 | 1.3368 | ||
| Metric Fine | M14 | 14.00000 | 1.5000 | 22 | |||
| Metric Coarse | M14 | 14.00000 | 2.0000 | 22 | |||
| BS Cycle | 9/16 BSC | 0.56250 | 14.28750 | 26 | 0.9769 | ||
| UNEF | 9/16 UNEF | 0.56250 | 14.28750 | 24 | 1.0583 | ||
| UNF | 9/16 UNF | 0.56250 | 14.28750 | 18 | 1.4111 | 0.8125 | 20.6375 |
| BS Fine | 9/16 BSF | 0.56250 | 14.28750 | 16 | 1.5875 | 0.9200 | 23.368 |
| BS Whit | 9/16 BSW | 0.56250 | 14.28750 | 12 | 2.1167 | 0.9200 | 23.368 |
| UNC | 9/16 UNC | 0.56250 | 14.28750 | 12 | 2.1167 | 0.8125 | 20.6375 |
| BS Cycle | 5/8 BSC | 0.62500 | 15.87500 | 26 | 0.9769 | ||
| UNEF | 5/8 UNEF | 0.62500 | 15.87500 | 24 | 1.0583 | ||
| UNF | 5/8 UNF | 0.62500 | 15.87500 | 18 | 1.4111 | 0.9375 | 23.8125 |
| BS Fine | 5/8 BSF | 0.62500 | 15.87500 | 14 | 1.8143 | 1.0100 | 25.654 |
| BS Whit | 5/8 BSW | 0.62500 | 15.87500 | 11 | 2.3091 | 1.0100 | 25.654 |
| UNC | 5/8 UNC | 0.62500 | 15.87500 | 11 | 2.3091 | 0.9375 | 23.8125 |
| Metric Fine | M16 | 16.00000 | 1.5000 | 24 | |||
| Metric Coarse | M16 | 16.00000 | 2.0000 | 24 | |||
| BS Pipe | G 3/8 | 0.65600 | 16.66240 | 19 | 1.3368 | ||
| BS Cycle | 11/16 BSC | 0.68750 | 17.46250 | 26 | 0.9769 | ||
| UNEF | 11/16 UNEF | 0.68750 | 17.46250 | 24 | 1.0583 | ||
| BS Fine | 11/16 BSF | 0.68750 | 17.46250 | 14 | 1.8143 | ||
| BS Whit | 11/16 BSW | 0.68750 | 17.46250 | 11 | 2.3091 | ||
| Metric Fine | M18 | 18.00000 | 1.5000 | 27 | |||
| Metric Coarse | M18 | 18.00000 | 2.5000 | 27 | |||
| BS Cycle | 3/4 BSC | 0.75000 | 19.05000 | 26 | 0.9769 | ||
| UNEF | 3/4 UNEF | 0.75000 | 19.05000 | 20 | 1.2700 | ||
| UNF | 3/4 UNF | 0.75000 | 19.05000 | 16 | 1.5875 | 1.1250 | 28.575 |
| BS Fine | 3/4 BSF | 0.75000 | 19.05000 | 12 | 2.1167 | 1.2000 | 30.48 |
| BS Whit | 3/4 BSW | 0.75000 | 19.05000 | 10 | 2.5400 | 1.2000 | 30.48 |
| UNC | 3/4 UNC | 0.75000 | 19.05000 | 10 | 2.5400 | 1.1250 | 28.575 |
| Metric Fine | M20 | 20.00000 | 1.5000 | 30 | |||
| Metric Coarse | M20 | 20.00000 | 2.5000 | 30 | |||
| UNEF | 13/16 UNEF | 0.81250 | 20.63750 | 20 | 1.2700 | ||
| BS Pipe | G 1/2 | 0.82500 | 20.95500 | 14 | 1.8143 | ||
| Metric Fine | M22 | 22.00000 | 1.5000 | 32 | |||
| Metric Coarse | M22 | 22.00000 | 2.5000 | 32 | |||
| BS Cycle | 7/8 BSC | 0.87500 | 22.22500 | 24 | 1.0583 | ||
| UNEF | 7/8 UNEF | 0.87500 | 22.22500 | 20 | 1.2700 | ||
| UNF | 7/8 UNF | 0.87500 | 22.22500 | 14 | 1.8143 | 1.3125 | 33.3375 |
| BS Fine | 7/8 BSF | 0.87500 | 22.22500 | 11 | 2.3091 | 1.3000 | 33.02 |
| BS Whit | 7/8 BSW | 0.87500 | 22.22500 | 9 | 2.8222 | 1.3000 | 33.02 |
| UNC | 7/8 UNC | 0.87500 | 22.22500 | 9 | 2.8222 | 1.3125 | 33.3375 |
| BS Pipe | G 5/8 | 0.90200 | 22.91080 | 14 | 1.8143 | ||
| UNEF | 15/16 UNEF | 0.93750 | 23.81250 | 20 | 1.2700 | ||
| Metric Fine | M24 | 24.00000 | 2.0000 | 36 | |||
| Metric Coarse | M24 | 24.00000 | 3.0000 | 36 | |||
| BS Cycle | 31/32 BSC | 0.96875 | 24.60625 | 30 | 0.8467 | ||
| Unified | 1-32 UN | 1.00000 | 25.40000 | 32 | 0.7938 | ||
| BS Cycle | 1 BSC | 1.00000 | 25.40000 | 24 | 1.0583 | ||
| UNEF | 1 UNEF | 1.00000 | 25.40000 | 20 | 1.2700 | ||
| UNF | 1 UNF | 1.00000 | 25.40000 | 12 | 2.1167 | 1.5000 | 38.1 |
| BS Fine | 1 BSF | 1.00000 | 25.40000 | 10 | 2.5400 | 1.4800 | 37.592 |
| BS Whit | 1 BSW | 1.00000 | 25.40000 | 8 | 3.1750 | 1.4800 | 37.592 |
| UNC | 1 UNC | 1.00000 | 25.40000 | 8 | 3.1750 | 1.5000 | 38.1 |
| BS Pipe | G 3/4 | 1.04100 | 26.44140 | 14 | 1.8143 | ||
| UNEF | 1-1/16 UNEF | 1.06250 | 26.98750 | 18 | 1.4111 | ||
| Metric Fine | M27 | 27.00000 | 2.0000 | 41 | |||
| Metric Coarse | M27 | 27.00000 | 3.0000 | 41 | |||
| BS Cycle | 1-1/8 BSC | 1.12500 | 28.57500 | 26 | 0.9769 | ||
| UNEF | 1-1/8 UNEF | 1.12500 | 28.57500 | 18 | 1.4111 | ||
| UNF | 1-1/8 UNF | 1.12500 | 28.57500 | 12 | 2.1167 | ||
| BS Fine | 1-1/8 BSF | 1.12500 | 28.57500 | 9 | 2.8222 | 1.6700 | 42.418 |
| BS Whit | 1-1/8 BSW | 1.12500 | 28.57500 | 7 | 3.6286 | 1.6700 | 42.418 |
| UNC | 1-1/8 UNC | 1.12500 | 28.57500 | 7 | 3.6286 | 1.6875 | 42.8625 |
| Metric Fine | M30 | 30.00000 | 2.0000 | 46 | |||
| Metric Coarse | M30 | 30.00000 | 3.5000 | 46 | |||
| UNEF | 1-3/16 UNEF | 1.18750 | 30.16250 | 18 | 1.4111 | ||
| BS Pipe | G 7/8 | 1.18900 | 30.20060 | 14 | 1.8143 | ||
| UNEF | 1-1/4 UNEF | 1.25000 | 31.75000 | 18 | 1.4111 | ||
| UNF | 1-1/4 UNF | 1.25000 | 31.75000 | 12 | 2.1167 | ||
| BS Fine | 1-1/4 BSF | 1.25000 | 31.75000 | 9 | 2.8222 | 1.8600 | 47.244 |
| BS Whit | 1-1/4 BSW | 1.25000 | 31.75000 | 7 | 3.6286 | 1.8600 | 47.244 |
| UNC | 1-1/4 UNC | 1.25000 | 31.75000 | 7 | 3.6286 | 1.8750 | 47.625 |
| BS Cycle | 1.290 BSC | 1.29000 | 32.76600 | 24 | 1.0583 | ||
| Metric Fine | M33 | 33.00000 | 2.0000 | 50 | |||
| Metric Coarse | M33 | 33.00000 | 3.5000 | 50 | |||
| BS Pipe | G 1 | 1.30900 | 33.24860 | 11 | 2.3091 | ||
| UNEF | 1-5/16 UNEF | 1.31250 | 33.33750 | 18 | 1.4111 | ||
| BS Cycle | 1.370 BSC | 1.37000 | 34.79800 | 24 | 1.0583 | ||
| UNEF | 1-3/8 UNEF | 1.37500 | 34.92500 | 18 | 1.4111 | ||
| UNF | 1-3/8 UNF | 1.37500 | 34.92500 | 12 | 2.1167 | ||
| BS Fine | 1-3/8 BSF | 1.37500 | 34.92500 | 8 | 3.1750 | 2.0500 | 52.07 |
| UNC | 1-3/8 UNC | 1.37500 | 34.92500 | 6 | 4.2333 | 2.0625 | 52.3875 |
| BS Whit | 1-3/8 BSW | 1.37500 | 34.92500 | 2.0500 | 52.07 | ||
| Metric Fine | M36 | 36.00000 | 3.0000 | 55 | |||
| Metric Coarse | M36 | 36.00000 | 4.0000 | 55 | |||
| UNEF | 1-7/16 UNEF | 1.43750 | 36.51250 | 18 | 1.4111 | ||
| BS Cycle | 1.450 BSC | 1.45000 | 36.83000 | 26 | 0.9769 | ||
| BS Pipe | G 1-1/8 | 1.49200 | 37.89680 | 11 | 2.3091 | ||
| UNEF | 1-1/2 UNEF | 1.50000 | 38.10000 | 18 | 1.4111 | ||
| UNF | 1-1/2 UNF | 1.50000 | 38.10000 | 12 | 2.1167 | ||
| BS Fine | 1-1/2 BSF | 1.50000 | 38.10000 | 8 | 3.1750 | 2.2200 | 56.388 |
| BS Whit | 1-1/2 BSW | 1.50000 | 38.10000 | 6 | 4.2333 | 2.2200 | 56.388 |
| UNC | 1-1/2 UNC | 1.50000 | 38.10000 | 6 | 4.2333 | 2.2500 | 57.15 |
| Metric Fine | M39 | 39.00000 | 3.0000 | 60 | |||
| Metric Coarse | M39 | 39.00000 | 4.0000 | 60 | |||
| BS Cycle | 1-9/16 BSC | 1.56250 | 39.68750 | 24 | 1.0583 | ||
| UNEF | 1-9/16 UNEF | 1.56250 | 39.68750 | 18 | 1.4111 | ||
| BS Cycle | 1-5/8 BSC | 1.62500 | 41.27500 | 24 | 1.0583 | ||
| UNEF | 1-5/8 UNEF | 1.62500 | 41.27500 | 18 | 1.4111 | ||
| BS Fine | 1-5/8 BSF | 1.62500 | 41.27500 | 8 | 3.1750 | 2.4100 | 61.214 |
| BS Whit | 1-5/8 BSW | 1.62500 | 41.27500 | 2.4100 | 61.214 | ||
| BS Pipe | G 1-1/4 | 1.65000 | 41.91000 | 11 | 2.3091 | ||
| Metric Fine | M42 | 42.00000 | 3.0000 | 65 | |||
| Metric Coarse | M42 | 42.00000 | 4.5000 | 65 | |||
| UNEF | 1-11/16 UNEF | 1.68750 | 42.86250 | 18 | 1.4111 | ||
| BS Fine | 1-3/4 BSF | 1.75000 | 44.45000 | 7 | 3.6286 | 2.5800 | 65.532 |
| BS Whit | 1-3/4 BSW | 1.75000 | 44.45000 | 5 | 5.0800 | 2.5800 | 65.532 |
| UNC | 1-3/4 UNC | 1.75000 | 44.45000 | 5 | 5.0800 | 2.6250 | 66.675 |
| Metric Fine | M45 | 45.00000 | 3.0000 | 70 | |||
| Metric Coarse | M45 | 45.00000 | 4.5000 | 70 | |||
| BS Pipe | G 1-1/2 | 1.88200 | 47.80280 | 11 | 2.3091 | ||
| Metric Fine | M48 | 48.00000 | 3.0000 | 75 | |||
| Metric Coarse | M48 | 48.00000 | 5.0000 | 75 | |||
| BS Fine | 2 BSF | 2.00000 | 50.80000 | 7 | 3.6286 | 2.7600 | 70.104 |
| BS Whit | 2 BSW | 2.00000 | 50.80000 | 4.5 | 5.6444 | 2.7600 | 70.104 |
| UNC | 2 UNC | 2.00000 | 50.80000 | 4.5 | 5.6444 | 3.0000 | 76.2 |
| Metric Coarse | M52 | 52.00000 | 5.0000 | 80 | |||
| BS Pipe | G 1-3/4 | 2.11600 | 53.74640 | 11 | 2.3091 | ||
| Metric Fine | M56 | 56.00000 | 4.0000 | 85 | |||
| Metric Coarse | M56 | 56.00000 | 5.5000 | 85 | |||
| BS Fine | 2-1/4 BSF | 2.25000 | 57.15000 | 6 | 4.2333 | 3.1500 | 80.01 |
| UNC | 2-1/4 UNC | 2.25000 | 57.15000 | 4.5 | 5.6444 | ||
| BS Whit | 2-1/4 BSW | 2.25000 | 57.15000 | 4 | 6.3500 | 3.1500 | 80.01 |
| BS Pipe | G 2 | 2.34700 | 59.61380 | 11 | 2.3091 | ||
| Metric Fine | M60 | 60.00000 | 4.0000 | 90 | |||
| Metric Coarse | M60 | 60.00000 | 5.5000 | 90 | |||
| BS Fine | 2-1/2 BSF | 2.50000 | 63.50000 | 6 | 4.2333 | 3.5500 | 90.17 |
| BS Whit | 2-1/2 BSW | 2.50000 | 63.50000 | 4 | 6.3500 | 3.5500 | 90.17 |
| UNC | 2-1/2 UNC | 2.50000 | 63.50000 | 4 | 6.3500 | ||
| Metric Fine | M64 | 64.00000 | 4.0000 | 95 | |||
| Metric Coarse | M64 | 64.00000 | 6.0000 | 95 | |||
| BS Pipe | G 2-1/4 | 2.58700 | 65.70980 | 11 | 2.3091 | ||
| Metric Coarse | M68 | 68.00000 | 6.0000 | 100 | |||
| BS Fine | 2-3/4 BSF | 2.75000 | 69.85000 | 6 | 4.2333 | 3.8900 | 98.806 |
| UNC | 2-3/4 UNC | 2.75000 | 69.85000 | 4 | 6.3500 | ||
| BS Whit | 2-3/4 BSW | 2.75000 | 69.85000 | 3.5 | 7.2571 | 3.8900 | 98.806 |
| BS Pipe | G 2-1/2 | 2.96000 | 75.18400 | 11 | 2.3091 | ||
| BS Fine | 3 BSF | 3.00000 | 76.20000 | 5 | 5.0800 | 4.1800 | 106.172 |
| UNC | 3 UNC | 3.00000 | 76.20000 | 4 | 6.3500 | ||
| BS Whit | 3 BSW | 3.00000 | 76.20000 | 3.5 | 7.2571 | 4.1800 | 106.172 |
| BS Pipe | G 2-3/4 | 3.21000 | 81.53400 | 11 | 2.3091 | ||
| BS Fine | 3-1/4 BSF | 3.25000 | 82.55000 | 5 | 5.0800 | 4.5300 | 115.062 |
| UNC | 3-1/4 UNC | 3.25000 | 82.55000 | 4 | 6.3500 | ||
| BS Whit | 3-1/4 BSW | 3.25000 | 82.55000 | 3.25 | 7.8154 | 4.5300 | 115.062 |
| BS Pipe | G 3 | 3.46000 | 87.88400 | 11 | 2.3091 | ||
| BS Fine | 3-1/2 BSF | 3.50000 | 88.90000 | 4.5 | 5.6444 | 4.8500 | 123.19 |
| UNC | 3-1/2 UNC | 3.50000 | 88.90000 | 4 | 6.3500 | ||
| BS Whit | 3-1/2 BSW | 3.50000 | 88.90000 | 3.25 | 7.8154 | 4.8500 | 123.19 |
| BS Fine | 3-3/4 BSF | 3.75000 | 95.25000 | 4.5 | 5.6444 | 5.1800 | 131.572 |
| UNC | 3-3/4 UNC | 3.75000 | 95.25000 | 4 | 6.3500 | ||
| BS Whit | 3-3/4 BSW | 3.75000 | 95.25000 | 3 | 8.4667 | 5.1800 | 131.572 |
| BS Pipe | G 3-1/2 | 3.95000 | 100.33000 | 11 | 2.3091 |
Twee van de meest voorkomende draadsoorten zijn de British en de Amerikaanse draaden.
Beide lijken er op elkaar maar zijn absolute anders.
| Definities van de verschillende draadsoorten | |
| NPT |
National Pipe Thread |
| FPT | Female Pipe Thread |
| MPT | Male Pipe Thread |
| PTF | SAE short tape pipe thread |
| NPTF | American National taper pipe thread for dryseal pressure-tight joints |
| NPSM | American National straight pipe thread for mechanical joints |
| NPSI | American National straight intermediate pipe thread |
British buis draden
BSP draden wordt het meest toegepast. Van de BSP draden zijn twee types:
BSPT (Britisch Standard Pipe Taper) en BSPP (Britisch Standard Pipe Parallel)
BSPP draden zijn rechte (of parallele) draden. Om een verbinding drukvast te krijgen is hierbij een sluitring vereist.
BSPT draden zijn conisch, drukvaste verbindingen worden door de draadzelf gerealiseerd.
Deze draden kunnen ook worden aangeduid met een G (voor recht) en een R (voor conisch). De terminologie voor het gebruik van de G en R kent zijn origine in Duitsland (G voor Gaz (gas), omdat het oorspronkelijk werdt gebruikt voor gas verbindingen; en R for Rohr (ofwel buis).
Zie de onderstaande tabellen voor BSPP en BSPT buis maten en de corresponderende draden per inch.
British Standard Pipe Parallel Threads
BSF en BA
| Parallel Pipe Size | Pipe Diameter Size | Threads Per Inch | Tapping Drill Size |
| G 1/8″ | 0.383″ | 28 | 8.73 mm |
| G 1/4″ | 0.518″ | 19 | 11.8mm |
| G 3/8″ | 0.656″ | 19 | 15.25mm |
| G 1/2″ | 0.825″ | 14 | 19.05mm |
| G 5/8″ | 0.902″ | 14 | 21.0mm |
| G 3/4″ | 1.041″ | 14 | 24.5mm |
| G 1″ | 1.309″ | 11 | 30.75mm |
British Standard Pipe Tapered Threads
NPT
| Tapered Pipe Size | Threads Per Inch | Tapping Drill Size |
| R 1/8″ | 28 | 8.4mm |
| R 1/4″ | 19 | 11.2mm |
| R 3/8″ | 19 | 14.75mm |
| R 1/2″ | 14 | 18.25mm |
| R 3/4″ | 14 | 23.75mm |
| R 1″ | 11 | 30mm |
Amerikaanse pijp draaden
Van de Amerikaanse draden zijn er twee veel voorkomend, de conische standaard (NPT) en de rechte (NPSM). De conische draaden worden gebruikt voor afdichten en koppellen, de rechte draden zijn alleen voor koppellen. The droge afsluitdraad (NPTF) maakt het mogelijk om te koppellen zonder aftedichten.
Er bestaan nog 3 minder gebruikte draaden, de GHT, de NST en de BSPT. de NPT en de NPTF draden zijn uitwisselbaar te gebruiken met afdichters als PTFE tape. Geen van de andere draden zijn zo uitwisselbaar te gebruiken. Female (vrouwelijke) NPT draden kunnen ook omschreven worden als FPT en male (mannelijke) NPT draden kunnen omschreven worden als MPT.
Buis maten refereren niet aan fysieke dimenties. De buiten diameter van elke buis of fitting moet gemeten en vergeleken worden met de tabel ter indentificatie.
Voorbeeld, een 3/4″NPT buis draad heeft een buiten diameter van 1.050 inch. Elke draad maat heeft een vast aantal draaden per inch (TPI). De 3/4″NPT buis draad heeft 14 draden per inch. Voor zowel TPI als de OD van de draad zijn benodigd voor indentificatie van de draad maat omdat verschillende maten dezelfde TPI hebben.
| NPT Taper Thread | Actual Diameter | Threads per inch | Tapping Drill Size |
| 1/8 “ | 0.405″ | 27 | R |
| 1/4 “ | 0.540″ | 18 | 7/16″ |
| 3/8 “ | 0.675″ | 18 | 37/64″ |
| 1/2 “ | 0.840″ | 14 | 23/32″ |
| 3/4 “ | 1.050″ | 14 | 59/64″ |
| 1 “ | 1.315″ | 11½ | 1- 5/32″ |
| NPS Straight Thread | Actual Diameter | Threads per inch | Tapping Drill Size |
| 1/8 “ | 0.405″ | 27 | S |
| 1/4 “ | 0.540″ | 18 | 29/64″ |
| 3/8 “ | 0.675″ | 18 | 19/32″ |
| 1/2 “ | 0.840″ | 14 | 47/64″ |
| 3/4 “ | 1.050″ | 14 | 15/16″ |
| 1 “ | 1.315″ | 11½ | 1- 3/16″ |
De verschillende schroefdraden
Gesorteerd op diameter gevolgd door pitch
| Series | Nominal Size |
Major Dia in |
Major Dia mm | Pitch tpi |
Pitch mm |
Bolt A/F in |
Bolt A/F mm |
| BA | 25 BA | 0.00984 | 0.25000 | 0.0700 | 0.0172 | 0.4375 | |
| BA | 24 BA | 0.01142 | 0.29000 | 0.0800 | 0.0200 | 0.5075 | |
| BA | 23 BA | 0.01299 | 0.33000 | 0.0900 | 0.0227 | 0.5775 | |
| BA | 22 BA | 0.01457 | 0.37000 | 0.1000 | 0.0255 | 0.6475 | |
| BA | 21 BA | 0.01654 | 0.42000 | 0.1100 | 0.0289 | 0.735 | |
| BA | 20 BA | 0.01890 | 0.48000 | 0.1200 | 0.0331 | 0.84 | |
| BA | 19 BA | 0.02126 | 0.54000 | 0.1400 | 0.0372 | 0.945 | |
| BA | 18 BA | 0.02441 | 0.62000 | 0.1500 | 0.0427 | 1.085 | |
| BA | 17 BA | 0.02756 | 0.70000 | 0.1700 | 0.0482 | 1.225 | |
| BA | 16 BA | 0.03110 | 0.79000 | 0.1900 | 0.0544 | 1.3825 | |
| BA | 15 BA | 0.03543 | 0.90000 | 0.2100 | 0.0620 | 1.575 | |
| Metric Fine | M1 | 1.00000 | 0.2000 | ||||
| BA | 14 BA | 0.03937 | 1.00000 | 0.2300 | 0.0689 | 1.75 | |
| Metric Coarse | M1 | 1.00000 | 0.2500 | ||||
| Metric Fine | M1.1 | 1.10000 | 0.2000 | ||||
| Metric Coarse | M1.1 | 1.10000 | 0.2500 | ||||
| Metric Fine | M1.2 | 1.20000 | 0.2000 | ||||
| BA | 13 BA | 0.04724 | 1.20000 | 0.2500 | 0.0827 | 2.1 | |
| Metric Coarse | M1.2 | 1.20000 | 0.2500 | ||||
| BA | 12 BA | 0.05118 | 1.30000 | 0.2800 | 0.0896 | 2.275 | |
| Metric Fine | M1.4 | 1.40000 | 0.2000 | ||||
| Metric Coarse | M1.4 | 1.40000 | 0.3000 | ||||
| BA | 11 BA | 0.05906 | 1.50000 | 0.3100 | 0.1033 | 2.625 | |
| UNF | 0 UNF | 0.06000 | 1.52400 | 80 | 0.3175 | ||
| BS Whit | 1/16 BSW | 0.06250 | 1.58750 | 60 | 0.4233 | ||
| Metric Fine | M1.6 | 1.60000 | 0.2000 | 3.2 | |||
| Metric Coarse | M1.6 | 1.60000 | 0.3500 | 3.2 | |||
| BA | 10 BA | 0.06693 | 1.70000 | 0.3500 | 0.1171 | 2.975 | |
| Metric Fine | M1.8 | 1.80000 | 0.2000 | ||||
| Metric Coarse | M1.8 | 1.80000 | 0.3500 | ||||
| UNF | 1 UNF | 0.07300 | 1.85420 | 72 | 0.3528 | ||
| UNC | 1 UNC | 0.07300 | 1.85420 | 64 | 0.3969 | ||
| BA | 9 BA | 0.07480 | 1.90000 | 0.3900 | 0.1309 | 3.325 | |
| Metric Fine | M2 | 2.00000 | 0.2500 | 4 | |||
| Metric Coarse | M2 | 2.00000 | 0.4000 | 4 | |||
| UNF | 2 UNF | 0.08600 | 2.18440 | 64 | 0.3969 | ||
| UNC | 2 UNC | 0.08600 | 2.18440 | 56 | 0.4536 | ||
| Metric Fine | M2.2 | 2.20000 | 0.2500 | ||||
| BA | 8 BA | 0.08661 | 2.20000 | 0.4300 | 0.1516 | 3.85 | |
| Metric Coarse | M2.2 | 2.20000 | 0.4500 | ||||
| BS Whit | 3/32 BSW | 0.09375 | 2.38125 | 48 | 0.5292 | ||
| Metric Fine | M2.5 | 2.50000 | 0.3500 | 5 | |||
| Metric Coarse | M2.5 | 2.50000 | 0.4500 | 5 | |||
| BA | 7 BA | 0.09843 | 2.50000 | 0.4800 | 0.1722 | 4.375 | |
| UNF | 3 UNF | 0.09900 | 2.51460 | 56 | 0.4536 | ||
| UNC | 3 UNC | 0.09900 | 2.51460 | 48 | 0.5292 | ||
| BA | 6 BA | 0.11024 | 2.80000 | 0.5300 | 0.1929 | 4.9 | |
| UNF | 4 UNF | 0.11200 | 2.84480 | 48 | 0.5292 | ||
| UNC | 4 UNC | 0.11200 | 2.84480 | 40 | 0.6350 | ||
| Metric Fine | M3 | 3.00000 | 0.3500 | 5.5 | |||
| Metric Coarse | M3 | 3.00000 | 0.5000 | 5.5 | |||
| Whit Sp Fine | 1/8 Fine | 0.12500 | 3.17500 | 60 | 0.4233 | ||
| BS Fine | 1/8 BSF | 0.12500 | 3.17500 | 48 | 0.5292 | ||
| UNF | 5 UNF | 0.12500 | 3.17500 | 44 | 0.5773 | ||
| BS Cycle | 1/8 BSC | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| BS Whit | 1/8 BSW | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| UNC | 5 UNC | 0.12500 | 3.17500 | 40 | 0.6350 | ||
| BS Brass | 1/8 BSB | 0.12500 | 3.17500 | 26 | 0.9769 | ||
| BA | 5 BA | 0.12598 | 3.20000 | 0.5900 | 0.2205 | 5.6 | |
| Metric Fine | M3.5 | 3.50000 | 0.3500 | ||||
| Metric Coarse | M3.5 | 3.50000 | 0.6000 | ||||
| UNF | 6 UNF | 0.13800 | 3.50520 | 40 | 0.6350 | ||
| UNC | 6 UNC | 0.13800 | 3.50520 | 32 | 0.7938 | ||
| BA | 4 BA | 0.14173 | 3.60000 | 0.6600 | 0.2480 | 6.3 | |
| Whit Sp Fine | 5/32 Fine | 0.15625 | 3.96875 | 60 | 0.4233 | ||
| Model Eng | 5/32 ME | 0.15625 | 3.96875 | 40 | 0.6350 | ||
| BS Cycle | 5/32 BSC | 0.15625 | 3.96875 | 32 | 0.7938 | ||
| BS Whit | 5/32 BSW | 0.15625 | 3.96875 | 32 | 0.7938 | ||
| BS Brass | 5/32 BSB | 0.15625 | 3.96875 | 26 | 0.9769 | ||
| Metric Fine | M4 | 4.00000 | 0.5000 | 7 | |||
| Metric Coarse | M4 | 4.00000 | 0.7000 | 7 | |||
| BA | 3 BA | 0.16142 | 4.10000 | 0.7300 | 0.2825 | 7.175 | |
| UNF | 8 UNF | 0.16400 | 4.16560 | 36 | 0.7056 | ||
| UNC | 8 UNC | 0.16400 | 4.16560 | 32 | 0.7938 | ||
| Metric Fine | M4.5 | 4.50000 | 0.5000 | ||||
| Metric Coarse | M4.5 | 4.50000 | 0.7500 | ||||
| BA | 2 BA | 0.18504 | 4.70000 | 0.8100 | 0.3238 | 8.225 | |
| Whit Sp Fine | 3/16 Fine | 0.18750 | 4.76250 | 60 | 0.4233 | ||
| Model Eng | 3/16 ME | 0.18750 | 4.76250 | 40 | 0.6350 | ||
| BS Cycle | 3/16 BSC | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| BS Fine | 3/16 BSF | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| Model Eng | 3/16 ME | 0.18750 | 4.76250 | 32 | 0.7938 | ||
| BS Brass | 3/16 BSB | 0.18750 | 4.76250 | 26 | 0.9769 | ||
| BS Whit | 3/16 BSW | 0.18750 | 4.76250 | 24 | 1.0583 | ||
| UNF | 10 UNF | 0.19000 | 4.82600 | 32 | 0.7938 | ||
| UNC | 10 UNC | 0.19000 | 4.82600 | 24 | 1.0583 | ||
| Metric Fine | M5 | 5.00000 | 0.5000 | 8 | |||
| Metric Coarse | M5 | 5.00000 | 0.8000 | 8 | |||
| BA | 1 BA | 0.20866 | 5.30000 | 0.9000 | 0.3652 | 9.275 | |
| UNEF | 12 UNEF | 0.21600 | 5.48640 | 32 | 0.7938 | ||
| UNF | 12 UNF | 0.21600 | 5.48640 | 28 | 0.9071 | ||
| UNC | 12 UNC | 0.21600 | 5.48640 | 24 | 1.0583 | ||
| Model Eng | 7/32 ME | 0.21875 | 5.55625 | 40 | 0.6350 | ||
| Model Eng | 7/32 ME | 0.21875 | 5.55625 | 32 | 0.7938 | ||
| BS Fine | 7/32 BSF | 0.21875 | 5.55625 | 28 | 0.9071 | ||
| BS Cycle | 7/32 BSC | 0.21875 | 5.55625 | 26 | 0.9769 | ||
| BS Whit | 7/32 BSW | 0.21875 | 5.55625 | 24 | 1.0583 | ||
| Metric Fine | M6 | 6.00000 | 0.7500 | 10 | |||
| BA | 0 BA | 0.23622 | 6.00000 | 1.0000 | 0.4134 | 10.5 | |
| Metric Coarse | M6 | 6.00000 | 1.0000 | 10 | |||
| Model Eng | 1/4 ME | 0.25000 | 6.35000 | 40 | 0.6350 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 36 | 0.7056 | ||
| Model Eng | 1/4 ME | 0.25000 | 6.35000 | 32 | 0.7938 | ||
| UNEF | 1/4 UNEF | 0.25000 | 6.35000 | 32 | 0.7938 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 30 | 0.8467 | ||
| UNF | 1/4 UNF | 0.25000 | 6.35000 | 28 | 0.9071 | 0.4375 | 11.1125 |
| BS Brass | 1/4 BSB | 0.25000 | 6.35000 | 26 | 0.9769 | ||
| BS Cycle | 1/4 BSC | 0.25000 | 6.35000 | 26 | 0.9769 | ||
| BS Fine | 1/4 BSF | 0.25000 | 6.35000 | 26 | 0.9769 | 0.4450 | 11.303 |
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 25 | 1.0160 | ||
| Whit Sp | 1/4 Whit | 0.25000 | 6.35000 | 24 | 1.0583 | ||
| BS Whit | 1/4 BSW | 0.25000 | 6.35000 | 20 | 1.2700 | 0.4450 | 11.303 |
| UNC | 1/4 UNC | 0.25000 | 6.35000 | 20 | 1.2700 | 0.4375 | 11.1125 |
| BS Cycle | 17/64 BSC | 0.26563 | 6.74688 | 26 | 0.9769 | ||
| Metric Fine | M7 | 7.00000 | 0.7500 | ||||
| Metric Coarse | M7 | 7.00000 | 1.0000 | ||||
| Model Eng | 9/32 ME | 0.28125 | 7.14375 | 40 | 0.6350 | ||
| Model Eng | 9/32 ME | 0.28125 | 7.14375 | 32 | 0.7938 | ||
| BS Cycle | 9/32 BSC | 0.28125 | 7.14375 | 26 | 0.9769 | ||
| BS Fine | 9/32 BSF | 0.28125 | 7.14375 | 26 | 0.9769 | ||
| BS Whit | 9/32 BSW | 0.28125 | 7.14375 | 20 | 1.2700 | ||
| Whit Sp | 9/32 Whit | 0.28125 | 7.14375 | 20 | 1.2700 | ||
| BS Pipe | G 1/16 | 0.30400 | 7.72160 | 28 | 0.9071 | ||
| Model Eng | 5/16 ME | 0.31250 | 7.93750 | 40 | 0.6350 | ||
| Model Eng | 5/16 ME | 0.31250 | 7.93750 | 32 | 0.7938 | ||
| UNEF | 5/16 UNEF | 0.31250 | 7.93750 | 32 | 0.7938 | ||
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 30 | 0.8467 | ||
| BS Brass | 5/16 BSB | 0.31250 | 7.93750 | 26 | 0.9769 | ||
| BS Cycle | 5/16 BSC | 0.31250 | 7.93750 | 26 | 0.9769 | ||
| UNF | 5/16 UNF | 0.31250 | 7.93750 | 24 | 1.0583 | 0.5000 | 12.7 |
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 24 | 1.0583 | ||
| BS Fine | 5/16 BSF | 0.31250 | 7.93750 | 22 | 1.1545 | 0.5250 | 13.335 |
| Whit Sp | 5/16 Whit | 0.31250 | 7.93750 | 20 | 1.2700 | ||
| BS Whit | 5/16 BSW | 0.31250 | 7.93750 | 18 | 1.4111 | 0.5250 | 13.335 |
| UNC | 5/16 UNC | 0.31250 | 7.93750 | 18 | 1.4111 | 0.5000 | 12.7 |
| Metric Fine | M8 | 8.00000 | 1.0000 | 13 | |||
| Metric Coarse | M8 | 8.00000 | 1.2500 | 13 | |||
| Metric Coarse | M9 | 9.00000 | 1.2500 | ||||
| Model Eng | 3/8 ME | 0.37500 | 9.52500 | 40 | 0.6350 | ||
| Model Eng | 3/8 ME | 0.37500 | 9.52500 | 32 | 0.7938 | ||
| UNEF | 3/8 UNEF | 0.37500 | 9.52500 | 32 | 0.7938 | ||
| BS Brass | 3/8 BSB | 0.37500 | 9.52500 | 26 | 0.9769 | ||
| BS Cycle | 3/8 BSC | 0.37500 | 9.52500 | 26 | 0.9769 | ||
| UNF | 3/8 UNF | 0.37500 | 9.52500 | 24 | 1.0583 | 0.5625 | 14.2875 |
| Whit Sp | 3/8 Whit | 0.37500 | 9.52500 | 24 | 1.0583 | ||
| BS Fine | 3/8 BSF | 0.37500 | 9.52500 | 20 | 1.2700 | 0.6000 | 15.24 |
| BS Whit | 3/8 BSW | 0.37500 | 9.52500 | 16 | 1.5875 | 0.6000 | 15.24 |
| UNC | 3/8 UNC | 0.37500 | 9.52500 | 16 | 1.5875 | 0.5625 | 14.2875 |
| BS Pipe | G 1/8 | 0.38300 | 9.72820 | 28 | 0.9071 | ||
| Metric Fine | M10 | 10.00000 | 1.2500 | 17 | |||
| Metric Coarse | M10 | 10.00000 | 1.5000 | 17 | |||
| Metric Fine | M11 | 11.00000 | 1.2500 | ||||
| Metric Coarse | M11 | 11.00000 | 1.5000 | ||||
| UNEF | 7/16 UNEF | 0.43750 | 11.11250 | 28 | 0.9071 | ||
| BS Cycle | 7/16 BSC | 0.43750 | 11.11250 | 26 | 0.9769 | ||
| UNF | 7/16 UNF | 0.43750 | 11.11250 | 20 | 1.2700 | 0.6250 | 15.875 |
| BS Fine | 7/16 BSF | 0.43750 | 11.11250 | 18 | 1.4111 | 0.7100 | 18.034 |
| BS Whit | 7/16 BSW | 0.43750 | 11.11250 | 14 | 1.8143 | 0.7100 | 18.034 |
| UNC | 7/16 UNC | 0.43750 | 11.11250 | 14 | 1.8143 | 0.6250 | 15.875 |
| Metric Fine | M12 | 12.00000 | 1.2500 | 19 | |||
| Metric Coarse | M12 | 12.00000 | 1.7500 | 19 | |||
| UNEF | 1/2 UNEF | 0.50000 | 12.70000 | 28 | 0.9071 | ||
| BS Cycle | 1/2 BSC | 0.50000 | 12.70000 | 26 | 0.9769 | ||
| UNF | 1/2 UNF | 0.50000 | 12.70000 | 20 | 1.2700 | 0.7500 | 19.05 |
| BS Fine | 1/2 BSF | 0.50000 | 12.70000 | 16 | 1.5875 | 0.8200 | 20.828 |
| UNC | 1/2 UNC | 0.50000 | 12.70000 | 13 | 1.9538 | 0.7500 | 19.05 |
| BS Whit | 1/2 BSW | 0.50000 | 12.70000 | 12 | 2.1167 | 0.8200 | 20.828 |
| BS Pipe | G 1/4 | 0.51800 | 13.15720 | 19 | 1.3368 | ||
| Metric Fine | M14 | 14.00000 | 1.5000 | 22 | |||
| Metric Coarse | M14 | 14.00000 | 2.0000 | 22 | |||
| BS Cycle | 9/16 BSC | 0.56250 | 14.28750 | 26 | 0.9769 | ||
| UNEF | 9/16 UNEF | 0.56250 | 14.28750 | 24 | 1.0583 | ||
| UNF | 9/16 UNF | 0.56250 | 14.28750 | 18 | 1.4111 | 0.8125 | 20.6375 |
| BS Fine | 9/16 BSF | 0.56250 | 14.28750 | 16 | 1.5875 | 0.9200 | 23.368 |
| BS Whit | 9/16 BSW | 0.56250 | 14.28750 | 12 | 2.1167 | 0.9200 | 23.368 |
| UNC | 9/16 UNC | 0.56250 | 14.28750 | 12 | 2.1167 | 0.8125 | 20.6375 |
| BS Cycle | 5/8 BSC | 0.62500 | 15.87500 | 26 | 0.9769 | ||
| UNEF | 5/8 UNEF | 0.62500 | 15.87500 | 24 | 1.0583 | ||
| UNF | 5/8 UNF | 0.62500 | 15.87500 | 18 | 1.4111 | 0.9375 | 23.8125 |
| BS Fine | 5/8 BSF | 0.62500 | 15.87500 | 14 | 1.8143 | 1.0100 | 25.654 |
| BS Whit | 5/8 BSW | 0.62500 | 15.87500 | 11 | 2.3091 | 1.0100 | 25.654 |
| UNC | 5/8 UNC | 0.62500 | 15.87500 | 11 | 2.3091 | 0.9375 | 23.8125 |
| Metric Fine | M16 | 16.00000 | 1.5000 | 24 | |||
| Metric Coarse | M16 | 16.00000 | 2.0000 | 24 | |||
| BS Pipe | G 3/8 | 0.65600 | 16.66240 | 19 | 1.3368 | ||
| BS Cycle | 11/16 BSC | 0.68750 | 17.46250 | 26 | 0.9769 | ||
| UNEF | 11/16 UNEF | 0.68750 | 17.46250 | 24 | 1.0583 | ||
| BS Fine | 11/16 BSF | 0.68750 | 17.46250 | 14 | 1.8143 | ||
| BS Whit | 11/16 BSW | 0.68750 | 17.46250 | 11 | 2.3091 | ||
| Metric Fine | M18 | 18.00000 | 1.5000 | 27 | |||
| Metric Coarse | M18 | 18.00000 | 2.5000 | 27 | |||
| BS Cycle | 3/4 BSC | 0.75000 | 19.05000 | 26 | 0.9769 | ||
| UNEF | 3/4 UNEF | 0.75000 | 19.05000 | 20 | 1.2700 | ||
| UNF | 3/4 UNF | 0.75000 | 19.05000 | 16 | 1.5875 | 1.1250 | 28.575 |
| BS Fine | 3/4 BSF | 0.75000 | 19.05000 | 12 | 2.1167 | 1.2000 | 30.48 |
| BS Whit | 3/4 BSW | 0.75000 | 19.05000 | 10 | 2.5400 | 1.2000 | 30.48 |
| UNC | 3/4 UNC | 0.75000 | 19.05000 | 10 | 2.5400 | 1.1250 | 28.575 |
| Metric Fine | M20 | 20.00000 | 1.5000 | 30 | |||
| Metric Coarse | M20 | 20.00000 | 2.5000 | 30 | |||
| UNEF | 13/16 UNEF | 0.81250 | 20.63750 | 20 | 1.2700 | ||
| BS Pipe | G 1/2 | 0.82500 | 20.95500 | 14 | 1.8143 | ||
| Metric Fine | M22 | 22.00000 | 1.5000 | 32 | |||
| Metric Coarse | M22 | 22.00000 | 2.5000 | 32 | |||
| BS Cycle | 7/8 BSC | 0.87500 | 22.22500 | 24 | 1.0583 | ||
| UNEF | 7/8 UNEF | 0.87500 | 22.22500 | 20 | 1.2700 | ||
| UNF | 7/8 UNF | 0.87500 | 22.22500 | 14 | 1.8143 | 1.3125 | 33.3375 |
| BS Fine | 7/8 BSF | 0.87500 | 22.22500 | 11 | 2.3091 | 1.3000 | 33.02 |
| BS Whit | 7/8 BSW | 0.87500 | 22.22500 | 9 | 2.8222 | 1.3000 | 33.02 |
| UNC | 7/8 UNC | 0.87500 | 22.22500 | 9 | 2.8222 | 1.3125 | 33.3375 |
| BS Pipe | G 5/8 | 0.90200 | 22.91080 | 14 | 1.8143 | ||
| UNEF | 15/16 UNEF | 0.93750 | 23.81250 | 20 | 1.2700 | ||
| Metric Fine | M24 | 24.00000 | 2.0000 | 36 | |||
| Metric Coarse | M24 | 24.00000 | 3.0000 | 36 | |||
| BS Cycle | 31/32 BSC | 0.96875 | 24.60625 | 30 | 0.8467 | ||
| Unified | 1-32 UN | 1.00000 | 25.40000 | 32 | 0.7938 | ||
| BS Cycle | 1 BSC | 1.00000 | 25.40000 | 24 | 1.0583 | ||
| UNEF | 1 UNEF | 1.00000 | 25.40000 | 20 | 1.2700 | ||
| UNF | 1 UNF | 1.00000 | 25.40000 | 12 | 2.1167 | 1.5000 | 38.1 |
| BS Fine | 1 BSF | 1.00000 | 25.40000 | 10 | 2.5400 | 1.4800 | 37.592 |
| BS Whit | 1 BSW | 1.00000 | 25.40000 | 8 | 3.1750 | 1.4800 | 37.592 |
| UNC | 1 UNC | 1.00000 | 25.40000 | 8 | 3.1750 | 1.5000 | 38.1 |
| BS Pipe | G 3/4 | 1.04100 | 26.44140 | 14 | 1.8143 | ||
| UNEF | 1-1/16 UNEF | 1.06250 | 26.98750 | 18 | 1.4111 | ||
| Metric Fine | M27 | 27.00000 | 2.0000 | 41 | |||
| Metric Coarse | M27 | 27.00000 | 3.0000 | 41 | |||
| BS Cycle | 1-1/8 BSC | 1.12500 | 28.57500 | 26 | 0.9769 | ||
| UNEF | 1-1/8 UNEF | 1.12500 | 28.57500 | 18 | 1.4111 | ||
| UNF | 1-1/8 UNF | 1.12500 | 28.57500 | 12 | 2.1167 | ||
| BS Fine | 1-1/8 BSF | 1.12500 | 28.57500 | 9 | 2.8222 | 1.6700 | 42.418 |
| BS Whit | 1-1/8 BSW | 1.12500 | 28.57500 | 7 | 3.6286 | 1.6700 | 42.418 |
| UNC | 1-1/8 UNC | 1.12500 | 28.57500 | 7 | 3.6286 | 1.6875 | 42.8625 |
| Metric Fine | M30 | 30.00000 | 2.0000 | 46 | |||
| Metric Coarse | M30 | 30.00000 | 3.5000 | 46 | |||
| UNEF | 1-3/16 UNEF | 1.18750 | 30.16250 | 18 | 1.4111 | ||
| BS Pipe | G 7/8 | 1.18900 | 30.20060 | 14 | 1.8143 | ||
| UNEF | 1-1/4 UNEF | 1.25000 | 31.75000 | 18 | 1.4111 | ||
| UNF | 1-1/4 UNF | 1.25000 | 31.75000 | 12 | 2.1167 | ||
| BS Fine | 1-1/4 BSF | 1.25000 | 31.75000 | 9 | 2.8222 | 1.8600 | 47.244 |
| BS Whit | 1-1/4 BSW | 1.25000 | 31.75000 | 7 | 3.6286 | 1.8600 | 47.244 |
| UNC | 1-1/4 UNC | 1.25000 | 31.75000 | 7 | 3.6286 | 1.8750 | 47.625 |
| BS Cycle | 1.290 BSC | 1.29000 | 32.76600 | 24 | 1.0583 | ||
| Metric Fine | M33 | 33.00000 | 2.0000 | 50 | |||
| Metric Coarse | M33 | 33.00000 | 3.5000 | 50 | |||
| BS Pipe | G 1 | 1.30900 | 33.24860 | 11 | 2.3091 | ||
| UNEF | 1-5/16 UNEF | 1.31250 | 33.33750 | 18 | 1.4111 | ||
| BS Cycle | 1.370 BSC | 1.37000 | 34.79800 | 24 | 1.0583 | ||
| UNEF | 1-3/8 UNEF | 1.37500 | 34.92500 | 18 | 1.4111 | ||
| UNF | 1-3/8 UNF | 1.37500 | 34.92500 | 12 | 2.1167 | ||
| BS Fine | 1-3/8 BSF | 1.37500 | 34.92500 | 8 | 3.1750 | 2.0500 | 52.07 |
| UNC | 1-3/8 UNC | 1.37500 | 34.92500 | 6 | 4.2333 | 2.0625 | 52.3875 |
| BS Whit | 1-3/8 BSW | 1.37500 | 34.92500 | 2.0500 | 52.07 | ||
| Metric Fine | M36 | 36.00000 | 3.0000 | 55 | |||
| Metric Coarse | M36 | 36.00000 | 4.0000 | 55 | |||
| UNEF | 1-7/16 UNEF | 1.43750 | 36.51250 | 18 | 1.4111 | ||
| BS Cycle | 1.450 BSC | 1.45000 | 36.83000 | 26 | 0.9769 | ||
| BS Pipe | G 1-1/8 | 1.49200 | 37.89680 | 11 | 2.3091 | ||
| UNEF | 1-1/2 UNEF | 1.50000 | 38.10000 | 18 | 1.4111 | ||
| UNF | 1-1/2 UNF | 1.50000 | 38.10000 | 12 | 2.1167 | ||
| BS Fine | 1-1/2 BSF | 1.50000 | 38.10000 | 8 | 3.1750 | 2.2200 | 56.388 |
| BS Whit | 1-1/2 BSW | 1.50000 | 38.10000 | 6 | 4.2333 | 2.2200 | 56.388 |
| UNC | 1-1/2 UNC | 1.50000 | 38.10000 | 6 | 4.2333 | 2.2500 | 57.15 |
| Metric Fine | M39 | 39.00000 | 3.0000 | 60 | |||
| Metric Coarse | M39 | 39.00000 | 4.0000 | 60 | |||
| BS Cycle | 1-9/16 BSC | 1.56250 | 39.68750 | 24 | 1.0583 | ||
| UNEF | 1-9/16 UNEF | 1.56250 | 39.68750 | 18 | 1.4111 | ||
| BS Cycle | 1-5/8 BSC | 1.62500 | 41.27500 | 24 | 1.0583 | ||
| UNEF | 1-5/8 UNEF | 1.62500 | 41.27500 | 18 | 1.4111 | ||
| BS Fine | 1-5/8 BSF | 1.62500 | 41.27500 | 8 | 3.1750 | 2.4100 | 61.214 |
| BS Whit | 1-5/8 BSW | 1.62500 | 41.27500 | 2.4100 | 61.214 | ||
| BS Pipe | G 1-1/4 | 1.65000 | 41.91000 | 11 | 2.3091 | ||
| Metric Fine | M42 | 42.00000 | 3.0000 | 65 | |||
| Metric Coarse | M42 | 42.00000 | 4.5000 | 65 | |||
| UNEF | 1-11/16 UNEF | 1.68750 | 42.86250 | 18 | 1.4111 | ||
| BS Fine | 1-3/4 BSF | 1.75000 | 44.45000 | 7 | 3.6286 | 2.5800 | 65.532 |
| BS Whit | 1-3/4 BSW | 1.75000 | 44.45000 | 5 | 5.0800 | 2.5800 | 65.532 |
| UNC | 1-3/4 UNC | 1.75000 | 44.45000 | 5 | 5.0800 | 2.6250 | 66.675 |
| Metric Fine | M45 | 45.00000 | 3.0000 | 70 | |||
| Metric Coarse | M45 | 45.00000 | 4.5000 | 70 | |||
| BS Pipe | G 1-1/2 | 1.88200 | 47.80280 | 11 | 2.3091 | ||
| Metric Fine | M48 | 48.00000 | 3.0000 | 75 | |||
| Metric Coarse | M48 | 48.00000 | 5.0000 | 75 | |||
| BS Fine | 2 BSF | 2.00000 | 50.80000 | 7 | 3.6286 | 2.7600 | 70.104 |
| BS Whit | 2 BSW | 2.00000 | 50.80000 | 4.5 | 5.6444 | 2.7600 | 70.104 |
| UNC | 2 UNC | 2.00000 | 50.80000 | 4.5 | 5.6444 | 3.0000 | 76.2 |
| Metric Coarse | M52 | 52.00000 | 5.0000 | 80 | |||
| BS Pipe | G 1-3/4 | 2.11600 | 53.74640 | 11 | 2.3091 | ||
| Metric Fine | M56 | 56.00000 | 4.0000 | 85 | |||
| Metric Coarse | M56 | 56.00000 | 5.5000 | 85 | |||
| BS Fine | 2-1/4 BSF | 2.25000 | 57.15000 | 6 | 4.2333 | 3.1500 | 80.01 |
| UNC | 2-1/4 UNC | 2.25000 | 57.15000 | 4.5 | 5.6444 | ||
| BS Whit | 2-1/4 BSW | 2.25000 | 57.15000 | 4 | 6.3500 | 3.1500 | 80.01 |
| BS Pipe | G 2 | 2.34700 | 59.61380 | 11 | 2.3091 | ||
| Metric Fine | M60 | 60.00000 | 4.0000 | 90 | |||
| Metric Coarse | M60 | 60.00000 | 5.5000 | 90 | |||
| BS Fine | 2-1/2 BSF | 2.50000 | 63.50000 | 6 | 4.2333 | 3.5500 | 90.17 |
| BS Whit | 2-1/2 BSW | 2.50000 | 63.50000 | 4 | 6.3500 | 3.5500 | 90.17 |
| UNC | 2-1/2 UNC | 2.50000 | 63.50000 | 4 | 6.3500 | ||
| Metric Fine | M64 | 64.00000 | 4.0000 | 95 | |||
| Metric Coarse | M64 | 64.00000 | 6.0000 | 95 | |||
| BS Pipe | G 2-1/4 | 2.58700 | 65.70980 | 11 | 2.3091 | ||
| Metric Coarse | M68 | 68.00000 | 6.0000 | 100 | |||
| BS Fine | 2-3/4 BSF | 2.75000 | 69.85000 | 6 | 4.2333 | 3.8900 | 98.806 |
| UNC | 2-3/4 UNC | 2.75000 | 69.85000 | 4 | 6.3500 | ||
| BS Whit | 2-3/4 BSW | 2.75000 | 69.85000 | 3.5 | 7.2571 | 3.8900 | 98.806 |
| BS Pipe | G 2-1/2 | 2.96000 | 75.18400 | 11 | 2.3091 | ||
| BS Fine | 3 BSF | 3.00000 | 76.20000 | 5 | 5.0800 | 4.1800 | 106.172 |
| UNC | 3 UNC | 3.00000 | 76.20000 | 4 | 6.3500 | ||
| BS Whit | 3 BSW | 3.00000 | 76.20000 | 3.5 | 7.2571 | 4.1800 | 106.172 |
| BS Pipe | G 2-3/4 | 3.21000 | 81.53400 | 11 | 2.3091 | ||
| BS Fine | 3-1/4 BSF | 3.25000 | 82.55000 | 5 | 5.0800 | 4.5300 | 115.062 |
| UNC | 3-1/4 UNC | 3.25000 | 82.55000 | 4 | 6.3500 | ||
| BS Whit | 3-1/4 BSW | 3.25000 | 82.55000 | 3.25 | 7.8154 | 4.5300 | 115.062 |
| BS Pipe | G 3 | 3.46000 | 87.88400 | 11 | 2.3091 | ||
| BS Fine | 3-1/2 BSF | 3.50000 | 88.90000 | 4.5 | 5.6444 | 4.8500 | 123.19 |
| UNC | 3-1/2 UNC | 3.50000 | 88.90000 | 4 | 6.3500 | ||
| BS Whit | 3-1/2 BSW | 3.50000 | 88.90000 | 3.25 | 7.8154 | 4.8500 | 123.19 |
| BS Fine | 3-3/4 BSF | 3.75000 | 95.25000 | 4.5 | 5.6444 | 5.1800 | 131.572 |
| UNC | 3-3/4 UNC | 3.75000 | 95.25000 | 4 | 6.3500 | ||
| BS Whit | 3-3/4 BSW | 3.75000 | 95.25000 | 3 | 8.4667 | 5.1800 | 131.572 |
| BS Pipe | G 3-1/2 | 3.95000 | 100.33000 | 11 | 2.3091 |