SAE grade 8 Hex flange bolt Middle carbon steel zinc plated Heat treated, YZP ... 3/4Length: 1/2 to 6 inch ( for thread 3/4)Grade 5, 8 or customized featuresMaterial could ... Nickle DIN6921 standard metric sizes availableOr customized specificationsMetric size M6 to M16Grade 8.8, 10.9 and 12. ... oxide, ZP, YZP, BZP, HDGDacro or brass coatedCustomized bolt and nut options.Material could be CS, SS302, SS304, ...