... oxide Features: Abrasion resistantEquipment:CNC lathe,automatic lathe,threading rolling machine,tapping drilling machineTesting:roughness test/hardness testPackage: carton and pallet ... or as per customer’s requestDimension: various type including D-head bolt, square head bolt, waist type bolt and bucket ... size and details)Drawings and samples are available. high tensile machine set screw nut