Chicago-latrobe 70207 7/64 Inch Hss Tin Jobber Drill Bit

Product Description

The CHICAGO-LATROBE 70207 is a jobber-length twist drill bit designed for general-purpose hole-making in ferrous and non-ferrous materials. Ground from high speed steel (HSS) and finished with a titanium nitride (TiN) coating, this bit delivers improved surface hardness and extended service life compared to uncoated HSS tooling. It measures 7/64 inch (0.1094 inch decimal) in diameter with an overall length of 2-5/8 inches and a flute length of 1-1/2 inches. The 118-degree standard point angle suits the widest range of common drilling applications. The straight-cylindrical shank seats securely in keyed or keyless drill chucks.

This bit is built for use in hand drills, drill presses, and bench-mounted drilling fixtures on the shop floor or in the field. Primary workpiece materials include cast iron and steel, making it a practical choice for HVAC techs, pipefitters, electricians, and general maintenance trades that need reliable small-diameter drilling in metal. It is part of the Series 150T line, which follows DIN 338 standards for jobber-length geometry and dimensional tolerances.

Key Features

• 7/64 inch diameter with a tight diameter tolerance of -0.0005 to 0.0000 inches for accurate hole sizing
• Titanium nitride (TiN) coating increases surface hardness and reduces friction during cutting
• 118-degree standard point angle for general-purpose use across a wide range of metals
• Web-thinned, tapered web configuration reduces thrust and improves chip evacuation
• 2-flute regular spiral flute design clears chips efficiently in through-hole and blind-hole applications
• Straight-cylindrical shank is compatible with standard 3-jaw drill chucks

Compatibility

Designed as a general-purpose jobber-length drill bit suitable for use with standard keyed and keyless drill chucks accepting a 7/64 inch straight-cylindrical shank. Conforms to DIN 338 jobber-length geometry standards.

Installation Notes

Installation is performed by any trade professional using a handheld drill, drill press, or similar rotary drilling tool. Secure the shank fully in the chuck before applying power and confirm the workpiece is clamped or fixtured to prevent rotation. Use cutting fluid or lubricant when drilling steel to reduce heat buildup and extend bit life. Inspect the cutting edges before each use and replace bits that show chipping or excessive wear.