Click Specification

(Non-preferred) dimensions in parentheses.

Hexagon Bolts Faced Under Head, and Faced Under Head and Turned on Shank with B.S.Threads - Black [Table 2]

BS 916 - 1953

Display drawing:

Thread Size
d

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

7/8

1-1/8

1-1/4

(1-3/8)

1-1/2

(1-5/8)

PP	No. of Threads/Inch	B.S.F.
		B.S.W.
d_s	faced under head	max
	faced under head and turned on shank	max
		min
s	max
	min
e	max
R	max
k	max
	min

26	22	20	18	16	16	14	12	11	10	9	9	8	8	8
20	18	16	14	12	12	11	10	9	8	7	7	6	6	5
0.280	0.342	0.405	0.468	0.530	0.592	0.665	0.790	0.915	1.040	1.175	1.300	1.425	1.550	1.685
0.2500	0.3125	0.3750	0.4375	0.5000	0.5625	0.625	0.750	0.875	1.000	1.125	1.250	1.375	1.500	1.625
0.2465	0.3090	0.3715	0.4335	0.4960	0.5585	0.619	0.744	0.867	0.992	1.117	1.242	1.365	1.490	1.615
0.445	0.525	0.600	0.710	0.820	0.920	1.010	1.200	1.300	1.480	1.670	1.860	2.050	2.220	2.410
0.435	0.515	0.585	0.695	0.800	0.900	0.985	1.175	1.270	1.450	1.640	1.815	2.005	2.175	2.365
0.51	0.61	0.69	0.82	0.95	1.06	1.17	1.39	1.5	1.71	1.93	2.15	2.37	2.56	2.78
1/32	1/32	1/32	1/32	1/32	1/32	1/32	1/32	1/32	1/32	3/64	3/64	3/64	3/64	3/64
0.176	0.218	0.260	0.302	0.343	0.375	0.417	0.500	0.583	0.666	0.75	0.83	0.92	1.00	1.08
0.156	0.198	0.240	0.282	0.323	0.345	0.387	0.470	0.553	0.636	0.71	0.79	0.88	0.96	1.02

Thread Size
d

1-3/4

2-1/4

2-1/2

2-3/4

(3-1/4)

3-1/2

(3-3/4)

4-1/2

5-1/2

PP	No. of Threads/Inch	B.S.F.
		B.S.W.
d_s	faced under head	max
	faced under head and turned on shank	max
		min
s	max
	min
e	max
R	max
k	max
	min

7	7	6	6	6	5	5	4.5	4.5	4.5	4	4	4	4
5	4.5	4	4	3.5	3.5	3.25	3.25	3	3	2.875	2.75	2.625	2.5
1.810	2.060	-	-	-	-	-	-	-	-	-	-	-	-
1.750	2.000	2.250	2.500	2.750	3.000	3.250	3.500	3.750	4.000	4.500	5.000	5.500	6.000
1.740	1.990	2.240	2.490	2.740	2.990	3.235	3.485	3.735	3.980	4.480	4.980	5.480	5.980
2.580	2.760	3.150	3.550	3.890	4.180	4.530	4.850	5.180	5.550	6.380	7.300	8.350	9.450
2.520	2.700	3.090	3.490	3.830	4.080	4.430	4.750	5.080	5.450	6.255	7.175	8.225	9.325
2.98	3.19	3.64	4.1	4.49	4.83	5.23	5.6	5.98	6.41	7.37	8.43	9.64	10.91
3/64	3/64	1/16	1/16	1/16	1/16	3/32	3/32	3/32	3/32	1/8	1/8	1/8	1/8
1.17	1.33	1.50	1.67	1.83	2.00	2.17	2.33	2.50	2.67	3.00	3.33	3.67	4.00
1.11	1.27	1.42	1.59	1.75	1.90	2.07	2.23	2.40	2.57	2.85	3.18	3.52	3.85

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