Askew head bolts, inch series

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Dimensions in inches (1 inch=25.4 mm) source ASME B18.2.1 2010 table 6 Hex Cap Screws
d Thread size	UNC (nr of threads x inch)	UNF (nr of threads x inch)	H1 min	H ref	E min	LT (l< 6")	LT (l> 6")	G min	F basic
3/8	16	24	0.277	0.25	0.36	1	1.25	0.747	0.563
1/2	13	20	0.371	0.328	0.482	1.25	1.5	0.995	0.75
5/8	11	18	0.480	0.422	0.605	1.5	1.75	1.244	0.938
3/4	10	16	0.574	0.5	0.729	1.75	2	1.494	1.125
7/8	9	14	0.683	0.594	0.852	2	2.25	1.742	1.313
1	8	12	0.761	0.656	0.976	2.25	2.5	1.991	1.5

Full list of Suppliers of Askew head bolts, inch series

UK

Clyde Fasteners Limited

Manufacturer of socket screws and Tee Slot Bolts both metric and imperial

Germany

Distributor of inch fasteners as per British and American standards

Fasten.it
3 Culver Court, Malting Lane
SG10 6AN, Much Hadham
United Kingdom

VAT: GB 312 6826 16
Tel: +44 3330 164455

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