6-32 x 3/16 Phillips Flat 82 Undercut Machine Screw Black Zinc Plated (10

1/4-20 x 2 3/4 Grade 8 Hex Cap Screw Plain Domestic USA (100)

3/8-24 x 1 1/2 Grade 8 Hex Cap Screw Plain Domestic USA (100)

the threads and nylon form a tight

brick and cement block

1/4-20 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) 5/16-18 Hex Tap Bolts Silicon Bronze 6-32 x 3/16 Phillips Flat1 4 20 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100) . 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