Express Delivery 6-20X3/8 Phillips Full Contour Truss Self Tapping Screw Type B Fully Threaded Black Oxide 10000 pcs

6X3/8 Phillips Full Contour Truss Self Tapping Screw Type B Fully Threaded Black Oxide. Type B thread for molded or through holes in thin metal, non-ferrous castings. Truss head screws are weaker than pan or round heads but preferred in applications where minimal clearance exists above the head. Modified truss heads offer low clearance and an extra large bearing surface. Commonly used to attach metal lathe to metal studs.