Copper Insert Nuts M3X4.5X5.7 SHENZHEN KEYSUN PRECISION TECHNOLOGY CO., LTD. Base Info Material：BrassType：Hexagon HeadConnection：Common BoltHead Style：HexagonalStandard：DIN, ANSI, GB, JIS, GOST, BSWGrade：6.8Specification：customizedOrigin：China Description Pre：Fasteners Brass Nuts Next：Excellent Torx Drives Type a Point Anti-Theft Screws
