Chicago-latrobe 69045 Jobber Drill Bit No 45 Hss 135 Deg

Product Description

The CHICAGO-LATROBE 69045 is a No. 45 wire-size jobber length drill bit engineered for heavy-duty drilling in steel alloy and similar ferrous materials. Built from high speed steel with a bright, uncoated finish, the 69045 features a 135-degree split point that reduces walking on entry and lowers the thrust needed to start the hole. The parabolic flute geometry evacuates chips aggressively, keeping the cutting edge cooler during extended runs. At 2.125 inches overall length with a 1.125-inch flute length, this bit is sized for standard jobber-length drilling tasks in production and maintenance environments. A straight-cylindrical shank with a 0.0820-inch diameter fits conventional drill chucks without adapters.

The 69045 is intended for drilling steel alloy workpieces in fabrication shops, manufacturing lines, and field maintenance settings. The heavy-duty grade and web-thinned, tapered web construction make it well-suited for use in CNC drill presses, hand drills, and production drilling fixtures where consistent hole quality and chip clearance matter. Licensed machinists, millwrights, pipefitters, and general maintenance mechanics are the primary users of this size class. The Series 150DH designation places it in a heavy-duty product line oriented toward metal-cutting applications where standard-grade bits wear prematurely.

Key Features

• No. 45 wire size, 0.0820-inch decimal diameter with a tolerance of -0.0005 to 0.0000 inches for consistent hole sizing
• 135-degree split point reduces center-punch dependency and lowers axial thrust on entry
• Parabolic flute profile improves chip evacuation and reduces heat buildup in deep holes
• Web-thinned, tapered web design decreases cutting resistance through the full depth of cut
• High speed steel construction with bright, uncoated finish suitable for general ferrous metal drilling
• Straight-cylindrical shank fits standard drill chucks without sleeves or adapters

Compatibility

Designed as an OEM-style replacement or direct-use jobber length drill bit for applications requiring a No. 45 wire-size hole in steel alloy and comparable ferrous workpiece materials.

Installation Notes

This bit is installed by machinists, millwrights, and maintenance mechanics in standard three-jaw or keyless drill chucks. Secure the straight-cylindrical shank fully in the chuck before operation and verify chuck runout before drilling precision holes. Use appropriate cutting fluid for steel alloy workpieces to extend bit life and maintain hole tolerance. Inspect the cutting edges for wear before each use; a worn split point will increase thrust and reduce hole quality.