1 1 2 thread size

NPT Thread Chart Amesweb

Nominal pipe size BSP Threads per inch Average thread diameter mm 1 ⁄ 8 quot 29 9 1 1 ⁄ 4 quot 19 12 3 3 ⁄ 8 quot 19 15 8 1 ⁄ 2 quot 14 19 8 3 ⁄ 4 quot 14 25 3 1 quot 11 31 8 1 1 ⁄ 4 quot 11 40 4 1 1 ⁄ 2 11 52 3 2 quot 11 58 1 2 1 ⁄ 2 quot 11 73 7 National Standard Taper Pipe NPT Threads Size Chart 1 16 0 3125 27 0 16 0 2611 1 8 0 405 27 0 18 4 189 2 189 0 26 1 4 0 54 18 0 2 4 3 0 401 3 8 0 675 18 0 24 4 189 3 0 408 1 2 0 84 14 0 32 4 189 3 0 534 3 4 1 05 14 0 34 4 189 3 0 546 1 1 315 11 5 0 4 4 189 3 188 0 682 1 188 1 66 11 5 0 42 4 189 3 188 0 707 1 189 1 9 11 5 0 42 4 189 3 188 0 724 2 2 375 11 5 0 436 5 3 0 756 2 189 2 875 8 0 682 5 189 3 The pipe size is often written such as this 1 8 quot 27 with a hyphen between size amp thread per inch and pronounced as quot one eighth twenty seven quot Three less common threads exist the Garden Hose Thread GHT Fire Hose Coupling NST and British Standard Taper Pipe Thread BSPT The NPT and NPTF threads are interchangeable with sealants such as PTFE tape None of National Standard Taper Pipe NPT Threads Size Chart 1 16 0 3125 27 0 16 0 2611 1 8 0 405 27 0 18 4 189 2 189 0 26 1 4 0 54 18 0 2 4 3 0 401 3 8 0 675 18 0 24 4 189 3 0 40895 rows nbsp 0183 32 ANSI ASME EXTERNAL Screw Thread Size Chart All units are in inches Unified

Inch and Metric Thread Size Comparison Chart Pouce et M 233 trique

27 rows nbsp 0183 32 Thread Pitch Chart Thread series cover designations of Tap size NF NC UNF UNC Threads per inch Basic major dia inches Basic effective dia inches Basic minor dia of ext threads inches Basic minor dia of int threads inches 12 02 2013 nbsp 0183 32 British Pipe Thread Whitworth Form Parallel BSPP BSPF Thread Designation Nominal Size Thread Form Type Major Diameter mmNominal pipe size BSP Threads per inch Average thread diameter mm 1 ⁄ 8 quot 29 9 1 1 ⁄ 4 quot 19 12 3 3 ⁄ 8 quot 19 15 8 1 ⁄ 2 quot 14 19 8 3 ⁄ 4 quot 14 25 3 1 quot 11 31 8 1 1 ⁄ 4 quot 11 40 4 1 1 ⁄ 2 11 52 3 2 quot 11 58 1 2 1 ⁄ 2 quot 11 73 7 6 11 2 309 163 83 6 45 28 6 150 165 1 6 5 5 Thread size Threads per inch Pitch mm Gauge length mm OD mm Major diameter of the thread Corresponding pipe mm in DN OD in Title British Standard Pipe Taper BSPT Threads Size Chart Author Pyromation Inc Subject BSPT Thread Created Date 5 7 2009 8 36 01 AM

NPT Thread Chart Amesweb

The threaded part s of plumbing fittings are made to a British Standard Pipe Thread size BSP BSP sizes don t match up with what you measure on the scale of a ruler which can obviously cause some confusion For example a 1 2 quot BSP thread see above actually measures more like 3 4 quot with a ruler The size was originally based on the inside diameter measured in Nominal Diameter Major Diameter Inch Major Diameter mm Tapping Drill Size mm TPI Pitch mm 7 16 quot 16 UN 0 4375 11 112 9 576 16 1 587 1 2 quot 16 UN 0 5000 Size Thread Form Type Major Diameter mm d D Pitch mm p Threads per inch Pitch Diameter mm d2 D2 Minor Diameter Male Thd d3 Thread Height H1 Tap Drill Diameter mm G1 8 1 8 quot BSPP 9 728 0 907 28 9 147 8 566 0 581 8 70 G1 2 1 2 quot BSPP 20 955 1 814 14 19 793 18 631 1 162 19 00 G5 8 5 8 quot BSPP 22 911 1 814 14 21 749 20 587 1 162 20 75 G3 4 3 4 quot BSPP Thread Pitch Chart Thread series cover designations of diameter pitch combinations that are measured by the number of threads per inch TPI applied to a single diameter Coarse Thread Series UNC UNRC is the most common designation for general application bolts and nuts Coarse thread is beneficial because they are less likely to cross ANSI ASME EXTERNAL Screw Thread Size Chart All units are in inches Unified Screw Threads per ANSI ASME B1 1 1989 R2001 R2001 Nomenclature are used Acceptability criteria are described in ANSI ASME B1 3M 1992 R2001 Note This screw chart is not comprehensive of all available standard threads as provided by the standard See also link