... ,steel,ironDia:M3-M20Surface Finish:nickel plated,white zinc,black zinc,color zinc,black oxide,chrome platedMin Order:50000 pcsStandard:JIS, ... 3/16--1' inch (4)Surfaceblack, yellow zinc, white zinc, white blue zinc, and Dakeluo (5)Grade of strength4, 6, 8,10,12 ( ... 6)MaterialSWRCH8A, SWRCH35K, Q195LY, 45# (7)PackingPaper carton Hexagon Nuts Steel Zinc ...