Hertel 85707628 Jobber Drill Bit Wire 38 Hss Tin 2.5in

Product Description

The HERTEL 85707628 is a jobber-length twist drill bit designed for general-purpose drilling in metal, wood, and plastics. It is sized to wire gauge 38, which corresponds to a decimal diameter of 0.1015 inches. The bit is manufactured from high speed steel (HSS) and carries a titanium nitride (TiN) coating that reduces friction and extends cutting edge life in repetitive drilling applications. With an overall length of 2.5 inches and a flute length of 1.4375 inches, it fits standard drill chucks and is used by machinists, maintenance techs, and fabricators working with close-tolerance hole requirements.

This bit is suited for light-duty production and maintenance drilling where a wire-gauge hole size is specified. The straight cylindrical shank seats in standard keyed or keyless chucks on benchtop drill presses, hand drills, and CNC drilling fixtures. The 118-degree split point and web-thinned tip reduce walking on entry and lower the thrust force needed, making it practical for hand-held use on thin stock and sheet metal. It is sold individually but must be ordered in multiples of 12.

Key Features

• Wire gauge size 38 (0.1015 inches decimal) for close-tolerance hole work
• TiN coating reduces friction and extends tool life in repetitive drilling cycles
• 118-degree standard point angle with web thinning reduces entry thrust and walking
• Two-flute spiral design with regular helix and tapered web for efficient chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Right-hand cut geometry compatible with conventional drill press and handheld drill rotation

Compatibility

Designed as a general-purpose jobber-length drill bit for use in standard keyed and keyless drill chucks accepting a 0.1015-inch straight cylindrical shank. Suitable for drill presses, hand drills, and CNC drilling equipment configured for wire-gauge tooling.

Installation Notes

Secure the shank fully in the chuck and verify there is no runout before beginning a cut. Secure the workpiece with a vise or clamp before drilling to prevent rotation. Apply cutting fluid when drilling ferrous metals to preserve the TiN coating and maintain edge life. Inspect the cutting edges before each use and replace the bit if the tip shows chipping or the coating is worn through at the cutting edge.