5/8 x 12 High Speed Long Boy (1/2" Shank)

1/2-20 x 5 1/2 Hex Cap Screw SS 316 (A4)

1 1/8-7 x 4 Socket Cap Screw Alloy

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

1/4-28 x 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (3300) 18" Long Boy Drill Bits 5/8 x 12 High Speed1 4 28 x 1 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (3300) . 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