#21 Heavy Duty Drill Bit - Stubby Length

7/16-14 x 5 1/2 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150)

5/16-18 x 3/4 Grade 5 Hex Cap Screw Plain Domestic USA (100)

#18 Heavy Duty Jobber Drill Bit

3/4 x 8 Ship Auger Wood Bit

3/4-10 x 1 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150) 5/16-18 Grade 5 Hex Cap Screws Zinc Plated - Domestic USA #21 Heavy Duty Drill Bit3 4 10 x 1 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (150) . 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