1-8 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (10)

3/4-10 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (400)

5/8-11 x 4 3/4 Hex Cap Screw SS 316 (A4)

1/2-20 x 4 Socket Set Screw Cup Point Alloy

1/4-20 x 1 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1600) 5/8-18 Socket Set Screws Cup Point Alloy 1-8 x 5 1/2 Grade1 4 20 x 1 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (1600) . 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