3/8-24 x 4 Grade 5 Hex Cap Screw Plain Domestic USA (250)

sewage and atmospheric conditions

1 3/8-6 x 18 Socket Cap Screw Alloy

#1 square recess drive and trim head with a Type 17 tip for faster starts and to resist splitting in hardwoods

Less breakage

1/2-20 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (200) 9/16-18 Grade 8 Hex Cap Screws Yellow Zinc Plated 3/8-24 x 4 Grade 51 2 20 x 2 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (200) . 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