43/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank) Stainless Steel Rivet / Steel Mandrel • Fasten aluminum agricultural siding

43 64 x 6 Reduced Shank Drill Bit Cobalt (1 2 Shank) Stainless Steel Rivet Steel Mandrel • Fasten aluminum agricultural siding • Fasten aluminum agricultural siding panels to wood joists without pre drilling • Extra sharp point for quick penetration of aluminum panels without “point walking” • Twin lead thread fastens one to three panel thicknesses securely to wood substrate • 5 16" Hex drive • Panel screws available with and without aluminum neoprene bonded sealing washers Manufactured to NAS 907 Type J specifications Heavy duty construction for portable or machine drilling For use in drilling in high tensile strength alloy steels