... and zinc Plating 3.Size:Dia M6-M42 4.Grade: 8.8,10.9,12.9 5.OEM service 1.Product informationProduct ... nameHex boltSize1/4,5/16,3/8,M6,M8,M10 seriesClass4.8,6.8,8.8,etc.Grade2,5,8,10,etc.MaterialLow carbon steel,stainless ... .47.58.8eA7.668.7911.0514.3818.921.124.49B--8.6310.8914.218.7220.8823.91S781013171922L8-408-408-5012-6016 ...