Pipe Threads – BSPT 55°

Whitworth Pipe Thread for pipes and fittings. Parallel female thread and tapered male thread (taper 1 : 16). An appropriate sealing compound can be used in the thread to ensure a leak-proof joint. The flank angle is 55°.

Male Thread Dia.Pitch mmTPITap/Drill mm
R 1/16”6.561280.907
R 1/8”8.566280.907
R 1/4”11.445191.337
R 3/8”14.95191.337
R 1/2”18.631141.814
R 3/4”24.117141.814
R 1”30.291112.309
R 1 1/4”38.952112.309
R 1 1/2”44.845112.309
R 2”56.656112.309
R 2 1/2”72.226112.309
R 3”84.926112.309
R 4”110.072112.309
R 5”135.472112.309
R 6”160.872112.309
Male Thread Dia.Female Thread Dia.Maj. Dia. mmMin. Dia. mm
R 1/16”Rp 1/16”37.723
R 1/8”Rp 1/8”69.728
R 1/4”Rp 1/4”813.157
R 3/8”Rp 3/8”1016.662
R 1/2”Rp 1/2”1520.955
R 3/4”Rp 3/4”2026.441
R 1”Rp 1”2533.249
R 1 1/4”Rp 1 1/4”3241.91
R 1 1/2”Rp 1 1/2”4047.803
R 2”Rp 2”5059.614
R 2 1/2”Rp 2 1/2”6575.184
R 3”Rp 3”8087.884
R 4”Rp 4”100113.03
R 5”Rp 5”125138.43
R 6”Rp 6”150163.83
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