... 100% full inspection 4. excellent surface treatment Item NO. type of lock washersMaterialsIron, aluminum, steel, copper, plastic, carbon steel, ... steels, or as per the customers’ requirements.DimensionsAccording to customer’s drawingSurface treatmentHeat treatment, polishing, PVD/CVD coating ... is acceptable for us.We are sincerely expecting to cooperate with you. Production Equipments: CNC Machining ...