Click Specification

Slotted Pan Head Screws with B.S.W. & B.S.F. Threads [Table 5]

BS 450 - 1958

Display drawing:

Thread Size
d

1/8

3/16

7/32

1/4

5/16

3/8

7/16

1/2

9/16

5/8

3/4

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

0.1250	0.1875	0.2188	0.2500	0.3125	0.3750	0.4375	0.5000	0.5625	0.6250	0.7500
40	24	/	20	18	16	14	12	(12)	11	10
/	(32)	(28)	26	22	20	18	16	(16)	14	12
0.245	0.373	0.425	0.492	0.615	0.740	0.863	0.987	1.031	1.125	1.250
0.231	0.357	0.407	0.473	0.594	0.716	0.838	0.958	0.999	1.090	1.209
0.075	0.110	0.125	0.144	0.178	0.212	0.247	0.281	0.315	0.350	0.419
0.065	0.099	0.112	0.130	0.162	0.195	0.227	0.260	0.293	0.325	0.390
0.039	0.050	0.055	0.061	0.071	0.082	0.093	0.104	0.115	0.126	0.148
0.032	0.042	0.046	0.051	0.061	0.072	0.082	0.092	0.103	0.113	0.134
0.040	0.061	0.069	0.078	0.095	0.112	0.129	0.145	0.162	0.179	0.213
0.010	0.015	0.015	0.031	0.031	0.031	0.031	0.031	0.031	0.031	0.031
0.020	0.025	0.025	0.040	0.045	0.045	0.050	0.050	0.050	0.055	0.060

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Similar Standards

1	[DIN EN ISO] DIN EN ISO 1580 - 2011	Slotted Pan Head Screws - Product Grade A View Suppliers
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16	[ASME/ANSI] ASME/ANSI B 18.6.3 - 2010	Slotted pan head machine screws
17	[NF] NF E 25-128 - 1994	Slotted Pan Head Screws - Product Grade A
18	[JIS] JIS B 1101 - 2017	Slotted Pan Head Screws - Table JA.3
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