R-series Pipe Thread (british Standard Pipe Taper = Bspt) Pt-series ...

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INDEX of THREAD DATA CHARTS

R-SERIES PIPE THREAD (BRITISH STANDARD PIPE TAPER = BSPT) PT-SERIES PIPE THREAD (JAPANESE PIPE TAPER)

Pipe Thread BSP (JIS PF)

British Pipe Thread ( Whitworth Form) -- Taper (BSPT)
Thread Designation BSPT Nominal Size BSPT Thread Form Type Major Diameter mm d=D Pitch mm p Threads per inch tpi Pitch Diameter mm d2=D2 Minor Diameter Male Thd. d3 Thread Height H1 Rounding r Tap Drill Diameter mm
R 1/16 1/16" BSPT 7.723 0.907 28 7.142 6.561 0.581 0.125 6.4
R 1/8 1/8" BSPT 9.728 0.907 28 9.147 8.566 0.581 0.125 8.4
R 1/4 1/4" BSPT 13.157 1.337 19 12.301 11.445 0.856 0.184 11.2
R 3/8 3/8" BSPT 16.662 1.337 19 15.806 14.950 0.856 0.184 14.75
R 1/2 1/2" BSPT 20.955 1.814 14 19.793 18.631 1.162 0.249 18.25
R 3/4 3/4" BSPT 26.441 1.814 14 25.279 24.117 1.162 0.249 23.75
R 1 1" BSPT 33.249 2.309 11 31.77 30.291 1.479 0.317 30
R 1 1/4 1 1/4" BSPT 41.910 2.309 11 40.431 38.952 1.479 0.317 38.5
R 1 1/2 1 1/2" BSPT 47.803 2.309 11 46.324 44.845 1.479 0.317 44.5
R 2 2" BSPT 59.614 2.309 11 58.135 56.656 1.479 0.317 56
R 2 1/2 2 1/2" BSPT 75.184 2.309 11 73.705 72.226 1.479 0.317 71
R 3 3" BSPT 87.884 2.309 11 86.405 84.926 1.479 0.317 85.5
R 4 4" BSPT 113.030 2.309 11 111.551 110.072 1.479 0.317 110.5
R 5 5" BSPT 138.430 2.309 11 136.951 135.472 1.479 0.317 136
R 6 6" BSPT 163.830 2.309 11 162.351 160.872 1.479 0.317 161.5

Disclaimer This data is provided for general information only. The intention is to provide accurate information; regardless; errors may exist in the supplied information. If accuracy is critical, base your final decisions on the data provided in the root document: ISO 7; which is a copyrighted document. To purchase a copy visit an Authorized Reseller.

Comments: Original Posting: 2/28/2008 Last Revision: 2/13/2013 Error corrections in, or comments about, the above data can be sent to: office@gagecrib.com

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