Ship Auger Wood Drill Bits are heat treated with machine ground hollows

1 1/4-12 x 12 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (8)

5/8-11 L9 Hex Nut Alloy Cadmium Yellow and Wax Coated Domestic USA (600)

1-8 x 5 Flat Socket Cap Screw Alloy

Aggressive thread for holding and withdrawal strength

1-14 x 2 1/4 Grade 5 Hex Cap Screw Plain Domestic USA (50) 7/8-9 Grade 8 Hex Cap Screws Plain - Domestic USA Ship Auger Wood Drill Bits1 14 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 120,000