Description
ST Fastening #17 x 1 1 2" Tapping Steelbinder Metal Roofing Screw, Hex Washer Head Light Gray Qty. 1,500 (Carton) High Temp Silicone Roof Boots for Solar Applications Steel Construction: Manufactured for dependable Steel Construction: Manufactured for dependable strength and structural performance Place the DTI washer beneath the bolt head or nut (depending on direction of tensioning)