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BS 1981 - 1991

Plain Hexagon Head Screws

BS 1981 - 1991 凹脑六角头螺钉Table18

See all versions and complete specifications: Plain Hexagon Head Screws — Full Specification Page

Dimensional Specifications — BS 1981 - 1991 (mm)

Size	P	s_max	s_min	k_nominal
2#	0.187	0.181	0.055	0.044
4#	0.25	0.244	0.11	0.096
5#	0.312	0.305	0.155	0.139
(3#)	0.187	0.181	0.07	0.058

Related Standards

GB 5 - 1976— Hexagon Head Bolts GB 30 - 1976— Hexagon Head Bolts GB /T 5780 - 2025— Hexagon Head Bolts - Product Grade C GB /T 5782 - 2025— Hexagon Head Bolts - Product Grade A and B GB /T 5780 - 2016— Hexagon Head Bolts - Product Grade C GB /T 5782 - 2016— Hexagon Head Bolts - Grade A and B GB /T 5780 - 2000— Hexagon Head Bolts - Product Grade C GB /T 5782 - 2000— Hexagon Head Bolts - Product Grades A and B GB 838 - 1988

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