Chicago-latrobe 49095 Screw Machine Drill Bit 0.1495 in

Product Description

The CHICAGO-LATROBE 49095 is a screw machine length drill bit designed for high-speed steel cutting in a compact, stub-length format. Built from high speed steel with a bright uncoated finish, this bit measures 0.1495 inches in diameter (Wire Size 25) and delivers a 118-degree standard point angle. The left-hand cutting direction makes it well-suited for reverse-rotation drilling applications, such as backing out broken fasteners. With a two-flute spiral design and web-thinned construction, it maintains clean entry and consistent chip evacuation across a range of workpiece materials.

This bit is rated for general purpose use across multiple materials including aluminum, copper, magnesium, slate, thermoplastic, and wood. The screw machine length format — shorter than a jobber-length bit — provides added rigidity and improved accuracy in drill press, CNC, and turret lathe applications. It is commonly used in production machining environments, maintenance shops, and specialty trade work where close-tolerance drilling in confined or high-cycle setups is required. The straight cylindrical shank fits standard drill chucks without adapters.

Key Features

• Left-hand spiral cut aids removal of broken studs and fasteners under reverse rotation
• 118-degree standard point angle provides versatile entry geometry across soft metals and non-metals
• Web-thinned parallel web reduces thrust load and improves center-starting accuracy
• Screw machine (stub) length increases rigidity and reduces deflection compared to jobber-length bits
• Bright uncoated high speed steel finish allows visual wear monitoring and suits general-purpose applications
• Diameter tolerance held to +0.0000 to -0.0007 inches per ISO standards

Compatibility

Designed as a general purpose screw machine length drill bit compatible with standard straight-shank drill chucks on drill presses, CNC turret lathes, and hand-held drilling equipment rated for Wire Size 25 tooling.

Installation Notes

Installation and use should be performed by machinists or qualified trades personnel familiar with rotating cutting tools. Secure the straight cylindrical shank fully in the chuck and verify runout before beginning a cut. Always power down and lock out the machine before changing bits or clearing chips. Left-hand bits require a machine or drill capable of operating in reverse rotation to function as intended.