BKAY International, offers fasteners of every type and size. We carry both metric and regular sizes, and you can order fasteners in any quantity from one to a gross. You can select a single threaded rod or bulk order nuts and bolts. We carry hard-to-find structural bolts, machine screws, studs and nuts, machine bolts, cap screws, and u-bolts. All grades of ASTM a193 and A320 bolts.