Hex Slotted Nuts Materials: carbon steel Surface: zinc-plated Size: 3, 4, 5, 6, 8, 10, 12, 14, 16, 18 and 20mm Hex ... , Dalian Leading Metal Ltd specialize in component fastener field includes nuts, bolts, washers, screws, pins, rivets, anchors per international ... standard IFI, ANSI, DIN, ISO, JIS, BC etc. and non-standard parts according to ...