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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|BritMet||MD||Hex Head Cap Screw||ASTM A574||Galvanized||5/8-16 x 3||Hex bolt A307 galv 5/8 x 3||116|
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