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GB 973 - 1976

Crosss Recessed Mushroom Screws

GB 973 - 1976 十字槽扁圆头螺钉

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Dimensional Specifications — GB 973 - 1976 (mm)

Size	P	k_max	k_min	s_max	s_min	ds_max	ds_min	k_nominal	ds_nominal
M2	0.45	1.72	1.48	6.2	5.84	7.5	2.5	1.6	0.2
M3	1	3	2.6	14	13.57	20	6	2.8	0.4
M4	1.25	3.44	2.96	18	17.57	21	6	3.2	0.4
M2.5	0.7	2.2	1.8	10	9.64	12	4	2	0.4

Related Standards

JIS B 1111 (JA6) - 2017— Cross Recessed Mushroom Head Screws JIS B 1111 (A4) - 2006— Cross Recessed Mushroom Head Screws [Annex Attached Table 4]JIS B 1111 (A4) - 1996— Cross Recessed Mushroom Head Screws [Annex Attached Table 4]ASME/ANSI B 18.6.3 - 2003— Cross Recessed Truss Head Machine Screws NF E 25-129 - 1985— Cross Recessed Mushroom Head Screws NF L 22-181 - 1976— Mushroom Head Screws with B.N.A.E. Cross Recess. SIM Thread NF L 22-186 - 1976— Mushroom Head Screws with B.N.A.E. Cross Recess and Cone Point. SIM Thread BS 450 - 1958— Cross Recess Mushroom Head Screws with B.S.W. & B.S.F. Threads [Table 8]

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