Chicago-Latrobe 69900

The CHICAGO-LATROBE 69900 Screw Machine Drill Bit Set includes 29 high-speed steel drill bits sized from 1/16 inch to 1/2 inch, covering fractional increments by 64ths. These drill bits have a straight shank and a general-purpose point type, and are designed with 2-flute spiral geometry, intended for drilling materials consistent with general-purpose high-speed steel (HSS) applications; refer to the material/operation guidance for recommended cutting speeds and feeds. The bits are bright, uncoated, and have a screw-machine length classification with a 118-degree conventional point angle. The set comes housed in a metal drill index for organized storage and quick access. These bits are right-hand cutting and do not have through-coolant capability; use external coolant as appropriate for the workpiece and operating conditions. Key Features: - Includes 29 drill bits sized 1/16" to 1/2" in fractional increments. - Constructed from general-purpose high-speed steel. - Features straight shanks and 2-flute spiral design with helix angles between 21° and 34°. - Screw-machine length classification with conventional 118° point angle. - Bright, uncoated finish. - Right-hand cutting direction. - Non-coolant-through design. - Supplied in a metal drill index case for storage and organization.