A490 Heavy Hex Structural Bolts

ASTM A490 are used in heavy construction that require greater tensile strength then that of an A325. Type 1 is an alloy steel and should not be galvanized. Type 3 is a weathering steel that has an atmospheric corrosion resistance. INF3013 coating system provide superior corrosion resistance, inproved assembly performance and no hydrogen embritllement concerns.