Special flute design improves penetration without blowback or compacting

7-20 x 7/16 Phillips Pan Self Drilling Framing Screws Black Phosphate (10000)

1/2-13 Lipped Drop-In Anchor Zinc Plated (50)

3/8-16 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (50)

5/16-18 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (250) Phillips Self Drilling Drywall Screws Zinc Plated Special flute design improves penetration5 16 18 x 6 Grade 5 Hex Cap Screw Plain Domestic USA (250). Grade 5 Hex Cap Screws are manufactured in the USA from medium carbon steel. Our Grade 5 material meets or exceeds SAE J429 Grade 5 specifications. All products are manufactured with rolled threads. Typical hardness on diameters 1 4 to 1 inch is HRC 25 34. On diameters over 1 inch to 1 1 2 hardness will range from HRC 19 30. Tensile strength for diameters 1 4 to 1 inch is a minimum of 120,000