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QC /T 856 - 2011

Hexalobular Socket Countersunk Head Screws

QC /T 856 - 2011 梅花槽沉头螺钉

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Dimensional Specifications — QC /T 856 - 2011 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
M6	1.25	6.75	40	15.8	15.4	2.5	38	2	3.2	17.3	4.65
M8	1.75	11.35	55	22	21.5	3.5	48	2.5	4.3	24	6
M10	2	13.45	60	29	28.5	4	48	3	5	32	8

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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