Hex Cap Screws, ASTM A574

Hex Cap Screws are hex headed fasteners with external machine screw threads and differ from hex machine bolts by having a washer surface on the underside or bearing side of the head and a chamfered thread end. Hex cap screws have tighter dimensional tolerances than bolts. Metric hex cap screws are specified by various DIN, ISO and JIS standards, and US/Imperial hex cap screws are dimensionally specified by the ASME B18.2.1 specification.

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Field FasILHex Head Cap ScrewASTM A574Plain1/2-13 x 31/2-13x3 hex cap screw grade 8 pln manufactured to asme b18.3 and astm a574 coated per astm f1941 fe/zn 3at18

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