... High Strength Bolt with Large Hax Head for Steel Structure Standards: 1) ISO 7412 M16-M30 ... ) Torshear type high strength bolts for steel structureMaterialAlloy steel ,carbon steel, stainless steel etc.SizeM16-M30Length40mm-200mmTensile strengthMax:1240Mpa ... , JIS, ASThreadMetric, UNC, UNF, BSWFinishPlain, Galvanized, Black, Nickel, Chrome, H.D.GPackingCarton, Box, Bag, PalletQuality AssuranceISO 9001 ...