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ASME B 18.3

Hexagon Socket Button Head Screws

ASME B 18.3 (Table 11-III) - 2012 内六角花形（梅花槽）圆头螺钉

See all versions and complete specifications: Hexagon Socket Button Head Screws — 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
1#	0.086	0.069	0.038	0.164	0.154	56	64	0.096	0.046	0.106
2#	0.125	0.111	0.058	0.238	0.226	40	44	0.135	0.066	0.145
4#	0.164	0.132	0.077	0.312	0.298	32	36	0.184	0.087	0.194
5#	0.25	0.200	0.122	0.437	0.419	20	28	0.280

Related Standards

GB /T 2672 - 2004— Hexalobular Socket Pan Head Screws DIN 34805-1 - 2018— Button Head Screws - Driving Feature Fexalobular Socket NF E 25-109 - 2001— Hexalobular Socket Round Head Screws ASME B 18.6.3 (H7B-VI) - 2024— Truss Head Screws with Hexalobular Slot [TABLE 2.2.7-2 VI]ASME B 18.6.3 (H12B-VI) - 2024— Hexalobular Socket Round Head Screws with Collar [TABLE 2.2.12-2 VI]ASME B 18.6.3 (T39-VI) - 2013— Hexalobular Socket Round Head Screws with Collar ASME B 18.6.3 (T25-VI) - 2013— Mushroom Head Screws with Hexalobular Slot JASO F 116 - 2005— T-type TORX Truss Head Machine Screws

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