Hex Head Cap Screw, System of Measurement Inch, Basic Material Stainless Steel, Material Grade 316, Fastener Finish NL-19(SM), Dia./Thread Size 5/8 In.-11, Fastener Length 3 1/2 in, Fastener Thread Direction Right Hand, Fastener Thread Type UNC (Coarse), Fastener Thread Style Partially Threaded, Fastener Industry Standards ASME B18.2.1, Head Type Hex, Min. Thread Length 1 1/2 in, Head Height 25/64 in, Head Width 15/16 in, Package Quantity 5 Foreverbolt(R) fasteners were designed over the last 15 years with NL-19(R). NL-19 is Foreverbolt's proprietary lab-tested process that alters the surface of stainless steel fasteners to produce a brighter finish, 1.9% increase in strength, and superior corrosion resistance.
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