Stainless Steel 18-8 for high corrosion resistance
Used to prevent leakage, distribute pressure of the bolt or screw.
Neoprene EPDM Bonded Sealing Washer
1/2 Inch Outer Diameter
#9 x 1" Hex Washer Head Metal Roof Screw *(Multiple Sizes in Listing)* Self Starting/self Tapping Metal to Wood, Sheet Metal Roofing, siding Screws with EPDM Washer Seal. 100 PCS (#9 x 1") - Product Features
Hex washer head, self starting roof screw with EPDM washer seal
Corrugated roofing and corrugated siding screws
Light Gray colored anti-corrosion coating
Roofing screw has a sharp point to enable it to penetrate metal roofing and siding without a drill
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