BSP/BSPT

Material Special Tool Steel
Hardness 58° to 60° HRC

HT-105

BSP (British Standard Pipe)
BSPT (British Standard Pipe Taper)

Thread Angle 55°

Nominal Diameter Inches	Major Diameter of Threads in Inches	Threads Per Inch	No. of FLutes	Dia. at large end of BSPT Tap	A Overall Length Inches	B Thread Length Inches	C Shank Diameter Inches
1/8	0.383	28	4	0.3986	2-1/8	3/4	0.318
1/4	0.518	19	4	0.5336	2-7/16	1-1/16	0.429
3/8	0.656	19	4	0.6716	2-9/16	1-1/16	0.542
1/2	0.825	14	4	0.8484	3-1/8	3-1/8	0.687
5/8	0.902	14	4	0.9254	3-3/16	1-3/8	0.800
3/4	1.041	14	4/6	1.0644	3-1/4	1-3/8	0.906
7/8	1.189	14	4/6	1.2124	3-1/2	1-9/16	1.093
1	1.309	11	4/6	1.3402	3-3/4	1-3/4	1.125
1-1/4	1.650	11	6	1.6812	4	1-3/4	1.312
1-1/2	1.882	11	6	1.9132	4-1/4	1-3/4	1.500
2	2.347	11	6	2.3782	4-1/2	1-3/4	1.875
2-1/2	2.960	11	6	2.9951	5-1/2	2-9/16	2.250
3	3.460	11	6	3.4951	6	2-5/8	2.625
3-1/2	3.950	11	8	3.9890	6-1/2	2-11/16	2.812
4	4.450	11	8	4.4890	6-3/4	3-3/4	3.000

 

HT-106

NTP (National Pipe Taper) Thread Angle 60°

Nominal Diameter Inches	Baisc Gauge Threads Diameter Inches	Threads Per Inch	No. of FLutes	Dia. at large end of NTP Tap	A Overall Length Inches	B Thread Length Inches	C Shank Diameter Inches
1/8	0.4044	27	4	0.420	2-1/8	3/4	0.318
1/4	0.5343	18	4	0.559	2-7/16	1-1/16	0.429
3/8	0.6714	18	4	0.694	2-9/16	1-1/16	0.542
1/2	0.8356	14	4	0.865	3-1/8	3-1/8	0.687
3/4	1.0460	14	4/6	1.075	3-1/4	1-3/8	0.906
1	1.3082	11½	4/6	1.350	3-3/4	1-3/4	1.125
1-1/4	1.6530	11½	4/6	1.693	4	1-3/4	1.312
1-1/2	1.8919	11½	6	1.932	4-1/4	1-3/4	1.500
2	2.3658	11½	6	2.405	4-1/2	1-3/4	1.875
2-1/2	2.8622	8	8	2.921	5-1/2	2-9/16	2.250
3	3.4885	8	8	3.547	6	2-5/8	2.625
3-1/2	3.9888	8	9	4.047	6-1/2	2-11/16	2.812
4	4.4871	8	9	4.547	6-3/4	2-3/4	3.000