9 x 1 1/2 Simpson Metal-Panel Screw - Hex Drive w/ EPDM Washer 316 SS - Box (100)

9 x 1 1/2 Simpson Metal-Panel Screw - Hex Drive w/ EPDM Washer 316 SS - Box (100) . • 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