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Click Specification

Unit:inch

Cross Recess Mushroom Head Screws with B.S.W. & B.S.F. Threads [Table 8]

BS 450 - 1958

Display drawing:

英标BS 450 - 1958 BS450 450BS Cross Recess Mushroom Head Screws with B.S.W. & B.S.F. Threads [Table 8]

Thread Size
d

1/8

3/16

1/4

5/16

3/8

d
PP		No. of Threads/Inch	B.S.W.
			B.S.F.
d_k		max
		min
k		max
		min
Socket No.
M		Nominal Size
t		max
		min
r		Full shank	max
R		Reduced shank	max

0.1250	0.1875	0.2500	0.3125	0.3750
40	24	20	18	16
/	(32)	26	22	20
0.289	0.448	0.573	0.698	0.823
0.272	0.425	0.546	0.666	0.787
0.078	0.118	0.150	0.183	0.215
0.066	0.103	0.133	0.162	0.191
1	2	3	4	4
0.116	0.170	0.240	0.325	0.356
0.085	0.110	0.136	0.184	0.215
0.069	0.092	0.118	0.166	0.197
0.010	0.015	0.031	0.031	0.031
0.020	0.025	0.040	0.045	0.045

Similar Standards

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6		[ASME/ANSI] ASME/ANSI B 18.6.3 - 2003	Cross recessed truss head machine screws
7		[ASME] ASME B 18.6.3 (T25-I/T25-IA) - 2013	Cross Recessed Mushroom Head Screws, Type I and IA
8		[NF] NF E 25-129 - 1985	Cross Recessed Mushroom Head Screws
9		[CNS] CNS 9675 - 1988	Cross Recessed Mushroom Head Machine Screws
10		[CNS] CNS 4559 - 1981	Cross Recessed Oval Cheese Head Screws