Black Zinc is an acidic

1/4 x 1 1/2 Phillips Pan Wall-Dog™ Light Duty Anchors Black - Box (100)

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

13/16 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

14 x 8 OlyLog® Log Home Fastener (250)

1/2-20 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (50) Flat Washers 316 Stainless Steel Black Zinc is an acidic1 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