Metric Heavy Hex Head Structural Bolt, ASTM A325 A490 Heavy Hex Bolts, Hot dip galvanized 8.8 heavy hex bolt for electric equipment Finish: ZINC, Plain Material: Steel, carbon steel Standard: DIN FINISHED: Black,ZINC HDG,Dacroment. PLAIN SIZE: M45,M4,M12 M72,M56 M3.5 LENGTH: 60MM-300MM GRADE: 4.8,6.8 8.8 10.9 TYPE: hexagon bolt customized Certificate: ISO9001 Metric Heavy Hex Head […]
High Strength A490 Bolt
Material: Carbon Steel, Stainless steel, Alloy Steel etc
Size: M4-M100 1/4″-4″
Length: 6mm to 100mm
Thread: UNC, UNF are available
Surface Treatment: Black oxide, zinc plate, copper plating, Dacromet, Teflon, phosphating
Certificate: ISO9001:2008, ROHS, SGS, CE
Standard: DIN, ISO, ANSI, ASTM, ASME, GB, JIS
After-sale: Solve all your problems satisfied after sales
A bolt is a form of threaded fastener with an external male thread. Bolts are thus closely related to, and often confused with, screws. A hex cap screw is a cap screw with a hexagonal head, designed to be driven by a wrench (spanner). An ASME B18.2.1 compliant cap screw has somewhat tighter tolerances than a hex bolt for the head height and the shank length. The nature of the tolerance difference allows an ASME B18.2.1 hex cap screw to always fit where a hex bolt is installed but a hex bolt could be slightly too large to be used where a hex cap screw is designed in.
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