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TRUSS HEAD/Self tapping, Stainless steel, 4R, 1/2 4RX1/2THA pack of 100Cadmium Plated Steel Sheet Metal Screw | 1/2-in, #4 Type A ThreadThese truss head screws are self-tapping and machined from cadmium-plated stainless steel. This truss head Phillips tapping screw (Alternate Part# 4RX1/2THA) is mad..