... Key) DIN911Materialsteel, stainless steel, carbon steel, free cutting steel, aluminum, brass, copper, alloyFinishPlating, Oxiding, Blasting, Painting, Anodizing, Heat treatment, AlodineTolerancehexagon ... has the locking characteristic of both floating-head and countersunk screw. When used to assemble the complicated machines, it provides ... and price list. Top Quality Hexagon Socket Head Cap Screw