Hex Slotted Nuts Materials: carbon steel Surface: zinc-plated Size: 3, 4, 5, 6, 8, 10, 12, 14, 16, 18 and 20mm Hex Slotted ... , Dalian Leading Metal Ltd specialize in component fastener field includes nuts, bolts, washers, screws, pins, rivets, anchors per international standard IFI, ANSI, DIN ... you with excellent quality, competitive price and on-time delivery. Hex Slotted Nuts