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JIS B 1128

Hexalobular Socket Countersunk Head Self-Tapping Screws

JIS B 1128 (F) - 2004 梅花槽沉头自攻钉

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Dimensional Specifications — JIS B 1128 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
ST2.9	1.3	15	2.7	6.9	2.35	1.3	8.2	3.2	2.5	7.3	1.4
ST3.5	1.6	25	3.6	8.9	2.8	1.6	10.4	4.3	3.2	9.3	2
ST4.2	1.8	30	5	10.9	3.15	1.8	12.6	6	3.6	11.3	2.4

Related Standards

GB /T 2670.1 - 2017— Hexalobular Socket Pan Head Tapping Screws GB /T 2670.2 - 2017— Hexalobular Socket Countersunk Head Tapping Screws GB /T 2670.3 - 2017— Hexalobular Socket Raised Countersunk(Oval) Head Tapping Screws GB /T 2670.1 - 2004— Hex Lobular Socket Pan Head Tapping Screws GB /T 2670.2 - 2004— Hexalobular Socket Countersunk Head Tapping Screws GB /T 2670.3 - 2004— Hexalobular Socket Raised Countersunk(Oval) Head Tapping Screws DIN 34819 - 2008— Hexalobular Socket Raised Head Tapping Screws with Collar ISO 14585 - 2011— Hexalobular Socket Pan Head Tapping Screws

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