1 3/8 x 6 Reduced Shank Drill Bit (1/2 Shank)

9/16-18 x 4 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (100)

#55 Heavy Duty Jobber Drill Bit

10 x 5 Phillips Bugle Decking Screws Yellow Zinc Plated - Carton (500)

9/16-18 L9 Hex Collar Locknuts Cadmium Yellow & Wax Coated Domestic USA (25)

5/8-11 x 3 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 1 1/4-7 Grade 8 Hex Cap Screws Plain - Domestic USA 1 3/8 x 6 Reduced5 8 11 x 3 3 4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) . 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