Screws: 12x1 1/2 Indent Hex Washer Slot Self Tap Screw A B Serrated Full Thd 18 8 Stainless St,100 Pcs

12x1 1/2 Indent Hex Washer Slot Self Tap Screw A B Serrated Full Thd 18 8 Stainless St,100 Pcs Reviews

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12X1 1/2 Indent Hex Washer Slot Self Tap Screw A B Serrated Full Thd 18 8 Stainless St. Concrete screws cut their own threads when used in concrete, block or brick. Carbide bits are recommended for use in masonry. Indented hex washer head offers advantages of hex head, plus greater protection to mating surface.