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KS B 1057 - 2001

Flat Round Head Weld Screws

KS B 1057 - 2001 平圆头下承面凸焊螺钉

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Dimensional Specifications — KS B 1057 - 2001 (mm)

Size	P	e	r	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
M4	0.8	1.75	2.25	11.6	1.8	/	12	1.6	2	12.4	2
M5	1.25	2.75	3.25	17.6	2.5	1	18	2.3	3	18.4	2.7
M6	1.75	3.75	4.25	25.6	4.5	1.25	26	4.3	4	26.4	4.7

Related Standards

GB /T 902.4 (PS) - 2010— Threaded Studs with Flange for Short-cycle Drawn Arc Stud Welding - PS Type Threaded Stud with Flanged IFI 148 (U3) - 2002— Type U3 Projection Weld Studs IFI 148 (UR) - 2002— Type UR Projection Weld Studs IFI 148 (UC4) - 2002— Type UC4 Projection Weld Studs IFI 148 (T3) - 2002— Type T3 Projection Weld Studs IFI 148 (US3) - 2002— Heavy Duty Type US3 Projection Welding Studs IFI 148 (TC4) - 2002— Flat Round Head with Rings on Undertake Surface Welding Screws IFI 148 (TUS3) - 2002— Type TUS3 Projection Weld Studs

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