Chicago-latrobe 69046 Jobber Drill Bit No. 46 0.0810 in Hss

Product Description

The CHICAGO-LATROBE 69046 is a jobber-length drill bit from the Series 150DH, designed for drilling into steel alloys and similar ferrous materials. Sized at wire gauge No. 46 (0.0810 inches decimal), it features a 135-degree split point that reduces walking at startup and lowers the thrust required to penetrate hard stock. The parabolic flute geometry improves chip evacuation during deeper passes. Manufactured from high-speed steel with a bright uncoated finish, this bit is a heavy-duty tool suited for production drilling environments where repeated, consistent hole quality is required. Licensed machinists, tool-and-die technicians, and maintenance tradespeople are the primary users.

This drill bit is built for drilling steel alloy workpieces in both shop and field applications. The straight-cylindrical shank seats cleanly into standard drill chucks and CNC tool holders without modification. The 2.125-inch overall length fits standard jobber-length drill blocks, drill presses, and handheld power drills. It is equally applicable to light production runs and one-off maintenance tasks where a precision, small-diameter hole is required in harder ferrous material. The two-flute parabolic design handles both shallow and deeper drilling passes without excessive chip packing.

Key Features

• Wire gauge No. 46 diameter, 0.0810 inches decimal, with a tight tolerance of -0.0005 to 0.0000 inches
• 135-degree split point reduces bit walking and lowers entry thrust on hard stock
• Parabolic flute geometry promotes efficient chip evacuation in deeper holes
• Web-thinned tapered web design reduces cutting resistance and heat buildup
• High-speed steel construction rated for heavy-duty drilling of steel alloy workpieces
• Straight-cylindrical shank at 0.0810 inches fits standard chucks and collets without adapters

Compatibility

Designed as an OEM-style jobber-length drill bit suitable for use in standard drill presses, benchtop drilling machines, handheld power drills, and CNC machining centers accepting a straight-cylindrical shank of 0.0810 inches diameter.

Installation Notes

This bit should be installed and operated by machinists or qualified tradespeople familiar with proper drilling technique for small-diameter, high-speed steel tooling. Secure the shank fully within the chuck jaws before operation and verify runout before drilling into finished stock. Always reduce spindle speed and feed rate when drilling harder steel alloys to prevent premature tip wear or breakage on bits of this diameter. Recondition or replace the bit at the first sign of chatter, oversized holes, or discoloration at the tip indicating heat damage.