Chicago-latrobe 44297 Jobber Length Drill Bit No. 27

Product Description

The CHICAGO-LATROBE 44297 is a jobber length drill bit sized to wire gauge No. 27 (0.1440 inches decimal), designed for general-purpose drilling in non-ferrous metals and similar materials. Built from high speed steel with a bright uncoated finish, this bit features a standard 118-degree point angle, a web-thinned and tapered web configuration for improved penetration, and a two-flute regular spiral for efficient chip evacuation. The straight-cylindrical shank measures 0.1440 inches in diameter and seats securely in standard drill chucks. At 3.0 inches overall length with a 1.875-inch flute length, this is a compact, versatile bit suited for machine shop, maintenance, and production drilling tasks.

The 44297 fits a wide range of bench-top, handheld, and CNC drilling applications where a wire-gauge No. 27 hole is required. It is rated for non-ferrous metal as the primary workpiece material, making it well suited for aluminum, brass, copper, and similar stock. The Series 150D designation indicates conformance to DIN 338 standards, a common benchmark for jobber drill geometry in industrial and trade environments. This bit is sold individually but requires purchase in multiples of 12 to meet minimum order requirements.

Key Features

• Wire gauge No. 27 size, 0.1440 inches decimal diameter
• 118-degree standard point angle with web-thinned, tapered web for cleaner entry
• High speed steel construction, bright uncoated finish
• Two-flute regular spiral for efficient chip removal
• Straight-cylindrical shank for broad chuck compatibility
• Conforms to DIN 338 standard, Series 150D

Compatibility

Designed as a general-purpose jobber length drill bit compatible with standard drill chucks accepting a 0.1440-inch straight-cylindrical shank, including handheld drills, drill presses, and CNC machines set up for wire-gauge tooling.

Installation Notes

Install in a properly sized drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Use appropriate cutting fluid or lubrication when drilling non-ferrous metals to extend tool life and maintain hole quality. Inspect the cutting edges for wear before each use and replace if chipping or dulling is observed.