Chicago-latrobe 70107 Jobber Drill Bit No.7 Hss Tin

Product Description

The CHICAGO-LATROBE 70107 is a jobber-length drill bit designed for general-purpose drilling in ferrous and non-ferrous metals. Ground from high speed steel and finished with a titanium nitride (TiN) coating, it runs harder and longer between sharpenings than uncoated HSS bits. The wire gauge size is No. 7, corresponding to a decimal diameter of 0.2010 inches. The 118-degree standard point angle suits a wide range of production and maintenance drilling tasks. With an overall length of 3.625 inches and a flute length of 2.4375 inches, this bit fits standard jobber-length drill chucks without an adapter. Web-thinned construction reduces thrust and improves chip evacuation in deeper holes.

This bit is suited for drilling cast iron and steel in residential and commercial maintenance, fabrication, and repair applications. The straight-cylindrical shank seats in standard three-jaw chucks on drill presses, cordless drills, and hand drills. Regular spiral fluting and a tapered web keep chips moving out of the hole during through-drilling. It is a single-piece quantity intended for tool crib stocking or individual technician use. Electricians, pipefitters, HVAC mechanics, and general maintenance trades all reach for No. 7 jobber bits when drilling pilot holes for taps or clearance holes for fasteners.

Key Features

• High speed steel construction with TiN coating for extended cutting life
• 118-degree standard point angle for general-purpose metal drilling
• Web-thinned, tapered web design reduces drilling thrust and improves chip flow
• Right-hand cut, regular spiral flute for consistent chip evacuation
• Straight-cylindrical shank fits standard jobber-length drill chucks
• Diameter tolerance of -0.0007 to 0.0000 inches for close-tolerance hole sizing
• Meets DIN 338 dimensional standard

Compatibility

Designed as a general-purpose OEM-style jobber-length drill bit compatible with any standard three-jaw chuck accepting a straight-cylindrical shank of 0.2010 inches diameter. Primary workpiece materials are cast iron and steel per manufacturer specification.

Installation Notes

Seat the shank fully into the chuck and tighten all three jaws evenly before drilling. Power down and lock out the drill press or disconnect cordless tools before changing bits. Use cutting fluid when drilling steel to extend TiN coating life and reduce heat buildup. Inspect the point for chipping or wear before each use; a damaged point should be resharpened or the bit replaced before continuing work.