BS 2470 3

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Hexagon socket countersunk head screws with ISO in...Information restricted to registered users: Login | Register now for a 14 day free trial


Dimensions in inches - BS 2470 Table 3 - Socket Flat Countersunk Head Cap Screws
d thread size		Nr. of threads x inch		d1 min	b basic thread length	dk max theo.Sharp	k max	t min	S nom	M nom
inches	mm	UNC	UNF	d1 min	b basic thread length	dk max theo.Sharp	k max	t min	S nom	M nom
0 (0.06)	1.52	-	80	0.568	0.5	0.138	0.044	0.025	0.035	0.048
1 (0.073)
2 (0.086)
3 0.099)
4 (0.112)
5 (0.125)
6 (0.138)
8 (0.164)
10 (0.19)
1/4
5/16
3/8
7/16
1/2
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2

Reproduced by permission of DIN Deutsches Institut für Normung e. V. The definitive version for the implementation of this standard is the edition bearing the most recent date of issue, obtainable from Beuth Verlag GmbH, Burggrafenstraße 6, 10787 Berlin, Germany.
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Standard BS 2470 3