... hex flange bolts, carriage bolts, wheel bolts, stud bolts, square head bolts, T bolts, eye bolts, U bolts, hook boltsNUTS: ... washersSCREWS: machine screws, self tapping screws, set screws, hex socket head cap screws, woodscrews, self drilling screwsStandard: ANSI, ISO, DIN ... steel, Q195, Q235, 35#, 45#, 35CrMo, 42CrMo, 40Cr etc.Protection: Plain (oiled), hot dip galvanized, white zink plated, yellow ...