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ASME B 18.3

Hexagon Socket Flat Countersunk Head Cap

ASME B 18.3 (Table 8-III) - 2012 内六角花形（梅花槽）沉头螺钉

See all versions and complete specifications: Hexagon Socket Flat Countersunk Head Cap — Full Specification Page

Dimensional Specifications — ASME B 18.3 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	ds_nominal
2#	0.112	0.035	0.111	0.112	0.1075	40	48	0.218	0.083	0.255
4#	0.138	0.04	0.132	0.138	0.1329	32	40	0.263	0.097	0.307
5#	0.19	0.05	0.178	0.19	0.184	24	32	0.359	0.127	0.411
6#	0.3125	0.087	0.266	0.3125	0.3053	18	24	0.6

Related Standards

GB /T 2673.2 - 2020— Hexalobular Socket High Countersunk Head Screws GB /T 2673.1 - 2018— Hexalobular Socket Countersunk Flat Head Screws GB /T 2673 - 2007— Hexalobular Lobular Socket Countersunk Head Screws GB 2673 - 1986— Hexagon Lobular Socket Countersunk Head Screws ISO 14581 - 2022— Hexalobular Socket Countersunk Flat Head Screws (common head style) with Reduced Loadability ISO 14581 - 2013— Fasteners — Hexalobular Socket Countersunk Flat Head Screws ISO 14582 - 2013— Hexalobular Socket Countersunk Head Screws, High Head Q 258— Hexagon Lobular Socket Countersunk Head Screws

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