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

1/2-20 x 2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (250)

3/4-16 x 1 3/4 Hex Cap Screw SS 18-8 (A2)

L9® High Tensile Strength Hex Nuts are designed for use in high stress

Threaded studs are set by tightening the nut

3/4-16 x 2 3/4 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 1/2-13 Flat Socket Cap Screws Alloy Ship Auger Wood Drill Bits3 4 16 x 2 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