:: Specifications	:: Camera-mount	:: ISO Fine Thread	:: ISO Coarse Thread
:: PG Thread	:: S. & H. Thread	:: Edison Thread	:: Valve Thread
:: Sewing-machine Thread	:: Cycle Thread	:: C. E. I. Thread	:: Löwenherz Thread
:: Bodmer Thread	:: VDI Thread	:: French Thread	:: Knuckle Thread DIN 405
:: Knuckle Thread DIN 20400	:: Buttress Fine Thread	:: Buttress Coarse Thread	:: Trapezoidal Fine Thread
:: Trapezoidal Coarse Thread	:: NPT Thread (USA)	:: NPTF Thread (USA)	:: UNC Thread (USA)
:: UNEF Thread	:: UNF Thread	:: 8-UN Thread (USA)	:: 12-UN Thread (USA)
::16-UN Thread (USA)	:: Sharp V Thread (USA)	::BA British Association (GB)	:: BSF Whitworth Fine Thread(GB)
:: BSW Whitworth Coarse Thread(GB)	:: BSP Whitworth Pipe Thread(GB)	:: BSPT Tapered Whit - worth Pipe Thread(GB)	:: Conversion Inch-Fractals to mm

BSPT Threads - British Standard Pipe Tapered Threads

Whitworth Tapered Pipe Thread DIN 2999

Specifications of International Thread Standards

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.

Male Thread Diameter	Female Thread Diameter	Pipe Minor Diameter mm	Pipe Major Diameter mm	Tapping Drill Size mm	TPI	Pitch mm
R 1/16"	Rp 1/16"	3	7,723	6,561	28	0,907
R 1/8"	Rp 1/8"	6	9,728	8,566	28	0,907
R 1/4"	Rp 1/4"	8	13,157	11,445	19	1,337
R 3/8"	Rp 3/8"	10	16,662	14,950	19	1,337
R 1/2"	Rp 1/2"	15	20,995	18,631	14	1,814
R 3/4"	Rp 3/4"	20	26,441	24,117	14	1,814
R 1"	Rp 1"	25	33,249	30,291	11	2,309
R 1 1/4"	Rp 1 1/4"	32	41,910	38,952	11	2,309
R 1 1/2"	Rp 1 1/2"	40	47,803	44,845	11	2,309
R 2"	Rp 2"	50	59,614	56,656	11	2,309
R 2 1/2"	Rp 2 1/2"	65	75,184	72,226	11	2,309
R 3"	Rp 3"	80	87,884	84,926	11	2,309
R 4"	R 4"	100	113,030	110,072	11	2,309
R 5"	Rp 5"	125	138,430	135,472	11	2,309
R 6"	Rp 6"	150	163,830	160,872	11	2,309

© 1998 Conex Metals