#21 Heavy Duty Jobber Drill Bit

1 1/8-7 x 4 1/2 L9 Hex Cap Screw Yellow Zinc Plated Domestic USA (36)

1 3/8-12 x 6 Socket Cap Screw Alloy

Silicon Bronze Flat Washers are similar to low carbon steel in hardness but offer high resistance to corrosive environments such as sea water

1 1/8-7 x 7 Grade 8 Hex Cap Screw Plain Domestic USA (5)

9/16-18 x 6 Grade 5 Hex Cap Screw Zinc Plated Domestic USA (25) 1 1/2-6 L9 Hex Cap Screws Yellow Zinc Plated - Domestic USA #21 Heavy Duty Jobber Drill9 16 18 x 6 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 of