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ANSI B 18.3

Metric Hexagon Socket Countersunk Head Screws

ASME/ANSI B 18.3.5M - 1986 米制内六角沉头螺钉

See all versions and complete specifications: Metric Hexagon Socket Countersunk Head Screws — Full Specification Page

Dimensional Specifications — ANSI B 18.3 (mm)

Size	P	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
M3	0.7	90°	7.8	2.48	4	3.82	1.5	20	8.96	2.5
M4	1	90°	11.7	3.72	6	5.82	2.2	24	13.44	4
M5	1.5	90°	19.5	6.20	10	9.78	3.6	32	22.40	6
M6	2	90°	26.18	8.12	14	13.73	4.7	40

Related Standards

GB /T 70.3 - 2023— Hexagon Socket Countersunk Head Screws with Reduced Loadability GB /T 70.3 - 2008— Hexagon Socket Countersunk Head Screws GB /T 70.3 - 2000— Hexagon Socket Countersunk Head Screws IFI 535 - 1982— Metric Socket Countersunk Head Cap Screws DIN 7991 - 1986— Hexagon Socket Countersunk Head Cap Screws ISO 10642 - 2019— Hexagon Socket Countersunk Head Screws with Reduced Loadability ISO 10642 - 2004— Hexagon Socket Countersunk Head Screws ISO 10642 - 1997— Hexagon Socket Countersunk Head Screws

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