1/4 x 3 Mushroom Spike Zinc Plated (100)

9/16-18 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (25)

5/16-18 x 6 Grade 8 Hex Cap Screw Plain Domestic USA (50)

12 x 2 Simpson Flat-Head Self-Drilling Screw w/ Wings - Square Drive 410 SS - Carton (1000)

3/8-16 x 3 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (300) 9/16-12 Grade 8 Hex Cap Screws Yellow Zinc Plated 1/4 x 3 Mushroom Spike3 8 16 x 3 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (300) . 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