... % full inspection 4. excellent surface treatment Item NO. type of lock washersMaterialsIron, aluminum, steel, copper, plastic, carbon steel ... PVD/CVD coating, galvanized, electroplating, spraying, and painting and so on.PackingWooden box, or as per the ... machining, drilling, turning, grinding, tapping, mould design and processing, casting, sheet mental working etcApplicationAutomation machine, medical ...