L9® components are fabricated from high-grade alloy steel AISI 8640H on state-of-the-art equipment right here in the USA

57/64 x 6 Reduced Shank Drill Bit Cobalt (1/2 Shank)

3/8-24 x 2 1/4 Grade 8 Hex Cap Screw Plain Domestic USA (450)

5/8 x 12 High Speed Long Boy (1/2" Shank)

9/16-18 x 3 1/2 Grade 5 Hex Cap Screw Plain Domestic USA (125) Jobber Drill Bits - Wire Gauge L9® components are fabricated from9 16 18 x 3 1 2 Grade 5 Hex Cap Screw Plain Domestic USA (125). 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