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Dimensions in inches (1 inch=25.4 mm) source BS 1083 Hexagon head screw, fully thread

Publication date: 08 / 1965

d Thread size
Nr. of threads BSW

Nr. of threads BSF

k min k max e max
s min
s mx
1/4
20 26 0.166 0.176 0.51 0.438 0.445
5/16
3/8
7/16
1/2
9/16
5/8
3/4
7/8
1
1-1/8
1-1/4
1-3/8
1-1/2
1-3/4
2



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