themechanical grade is 12.9, case hardening is hrc 38 42, material is 40cr,and the surface is treated with bluing, screw thread has two type description, one is the metric system m12 m24 6g, another is denominator system 1/2 1/4 2a.the specification can be customized.
1150 piece grade 8 nut bolt washer assortment, hex head cap screws, flat and lock washers, hex nuts, coarse thread uss kit 4.4 out of 5 stars 30 $139.99 $ 139 . 99
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most common type of hex bolt. available in grade 2, grade 5, grade 8 & stainless steel. partially threaded in most cases. hex flange & frame bolts. supplied in high strength grade 8 with black phos finish or 18 8 stainless steel. hex machine bolts. steel with galvanized finish; used in decks & outdoor applications.
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fasteners are used for fastening and securing materials such as wood, metal, plastic, or concrete. they include nuts and bolts, threaded rods, structural bolts, machine screws, wedge anchors, washers, rivets, and more in a variety of types and sizes, including metric and inch.
choose from metric hex, flange and lock nuts with coarse or fine thread. metric hex nuts grade 8.8 and 10.9. metric screws plain black metric socket head cap screws with coarse thread grade 12.9. metric washers metric flat and lock washers grade 8.8 and 10.9. metric washer sizes range from m4 to m18.