Proof load strength will meet a minimum of 100

Black Zinc is an acidic

5/8-11 x 14 Socket Cap Screw Alloy

3/8-16 x 5 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (50)

1/2-20 x 4 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (25)

1/2-20 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (50) Flat Washers 316 Stainless Steel Proof load strength will meet1 2 20 x 2 1 4 Grade 5 Hex Cap Screw Plain Domestic USA (50). 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