Osg 10111005 Screw Machine Drill Bit 0.111 in Cobalt Hss

Product Description

The OSG 10111005 is a screw machine length drill bit designed for high-performance drilling in steel and alloy steel applications. Built from cobalt high speed steel with a coated finish, this bit delivers extended tool life and heat resistance in demanding production environments. It features a 130-degree point angle, an X-thinned web for reduced thrust and easier penetration, and a two-flute regular spiral configuration. The straight-cylindrical shank seats securely in standard drill chucks. Machinists, tool room technicians, and maintenance professionals working with ferrous metals will find this bit suited to short-hole, high-cycle work.

This drill bit is optimized for screw machine length applications where rigidity and precision matter. The 0.111-inch diameter falls within the wire gauge range, corresponding to a No. 34 drill size. With an overall length of 2-5/16 inches and a flute length of 7/8 inch, it is built for use in CNC machining centers, drill presses, and screw machines processing steel and alloy steel workpieces. The 3xD flute-to-diameter ratio supports chip evacuation in short-depth holes without coolant-through capability required.

Key Features

• Cobalt high speed steel construction resists heat and wear when drilling ferrous metals
• 130-degree point angle reduces walking and improves centering on entry
• X-thinned web lowers drilling thrust and extends cutting edge life
• Tapered web configuration with regular spiral flutes promotes consistent chip flow
• Straight-cylindrical shank fits standard drill chucks without adapters
• Diameter tolerance of plus 0 to minus 0.014 mm for close-tolerance hole production

Compatibility

Designed as a screw machine length replacement or production drill bit for applications involving steel and alloy steel workpieces, sized to the No. 34 wire gauge standard at 0.1110 inches decimal diameter.

Installation Notes

This bit is installed by a machinist or tool room technician into a drill chuck or collet rated for straight-shank tooling. Ensure the machine spindle is fully stopped and locked out before changing tooling. Verify chuck or collet concentricity to maintain diameter tolerance and hole quality. Cobalt HSS bits should not be used at feed and speed settings intended for standard HSS tooling without adjustment, as cobalt grades perform best at optimized parameters for the workpiece material.