... finishing: plain, zinc plated, galvanized, yellow zinc plated, black oxide, H.D.G,ect.High strength HDG bolt 10.9s1 ... and harmful defect on bolt and nut5-Surface dealing : Black, Grey(phosphated, Parkerising)6- Thread standard : Thread length ... , ASTM, IFI, JIS, ASThreadMetric, UNC, UNF, BSWFinishPlain, Galvanized, Black, Nickel, Chrome, H.D.GPackingCarton, Box, Bag, PalletQuality AssuranceISO 9001Our ...