Self-countersinking nibs under head insure seating of screw head flush with work surface

1 1/2-6 x 12 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (3)

5/8 x 12 Hex Lag Screw Zinc Plated

2-4 1/2 x 4 1/2 Socket Cap Screw Alloy

1/4-20 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (100) M24-3.00 Flat Socket Cap Screws 12.9 DIN 7991 Black Oxide Self-countersinking nibs under head insure1 4 20 x 3 Grade 5 Hex Cap Screw Plain Domestic USA (100). 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