with North American steel and labor since 1983; North American Made: Bolts, Nuts, Screws, for Industries & Metal Building; Brands: Master Gripper, Master Gripper MDP, Master Tapper, Master Purlin and Girt Bolts, Master Hex Serrated Flange Nuts, Master Drillers, Master Culvert and Guard Rail Bolts, Master One Steppers, Hardware Fasteners, Screws and Washers ...