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BS 1768 - 1963

Unified Hexagon Head Bolts, Washer Faced

BS 1768 - 1963 精制美制六角头杆部带孔螺栓

See all versions and complete specifications: Unified Hexagon Head Bolts, Washer Faced — Full Specification Page

Dimensional Specifications — BS 1768 - 1963 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
1/4	18	0.201	0.211	0.5	0.493	24	0.3125	0.483	0.473	0.309	0.577
3/8	12	0.361	0.371	0.8125	0.8045	18	0.5625	0.792	0.782	0.5585	0.938
5/16	14	0.281	0.291	0.625	0.617	20	0.4375	0.605	0.595	0.4335	0.722
7/16	10	0.463	0.483	1.125

Related Standards

GB /T 31.2 - 2025— Hexagon Head Bolts with Split Pin Hole on Shank - Reduced Shank - Product Grade B GB /T 31.3 - 2025— Hexagon Head Bolts with Split Pin Hole on Shank - Fine Pitch Thread GB /T 31.1 - 2013— Hexagon Bolts with Split Pin Hole on Shank GB /T 31.1 - 1988— Hexagon Bolts with Split Pin Hole on Shank A and B GB /T 31.2 - 1988— Hexagon Bolts with Split Pin Hole On Shank-Reduced Shank-Product Grade B GB 31.3 - 1988— Hexagon Bolts with Split Pin Hole on Shank-Fine Pitch Thread-Product Grade A and B GB 23 - 1976— Bolts, Small Hexagon Head with Hole Through The Shank GB 24 - 1976— Bolts, Small Hexagon Head with Fit Neck and Hole Through The Shank

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