5/16-18 x 1 Grade 8 Hex Cap Screw Yellow Zinc Plated Domestic USA (1400)

but they’re also vibration- and shock-resistant

7/8-14 x 3 1/2 Grade 8 Hex Cap Screw Yellow Zinc Plated

salt spray resistance

1-14 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (40) 1/2 Hex Lag Screws Hot Dipped Galvanized 5/16-18 x 1 Grade 81 14 x 3 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (40) . 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