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Product Description Zinc Coated DIN933 Hex Bolt and DIN934 Nut Bolt & Nut:Bolt and Nut,bolts and nuts,8.8grade HDG bolt and nut,stainless steel bolt and nut,HDG bolt and nut,zinc plated bolt and nut,Thread bolt 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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