Hertel 04138723 Cobalt Jobber Drill Bit No 25

Product Description

The HERTEL 04138723 is a cobalt jobber-length drill bit sized to No. 25 wire gauge (0.1495 inches decimal equivalent) with a 135-degree split point and oxide/gold coating. Cobalt construction provides increased heat and wear resistance compared to standard high-speed steel, making it well suited for drilling harder materials, stainless steel, and tough alloys. The split point geometry reduces walking on entry and lowers the thrust force required to start the hole. Right-hand spiral flutes evacuate chips efficiently during through and blind hole operations. This bit is used by machinists, pipefitters, electricians, and maintenance technicians working in industrial and trade settings.

This bit is designed for holemaking applications where a No. 25 wire-size hole is required. The jobber-length flute (1.875 inches) suits general-purpose drilling in metal, sheet stock, and structural material. The straight-cylindrical shank fits standard keyed and keyless drill chucks commonly found on portable drills, drill presses, and CNC equipment. Regular spiral type and tapered web configuration with web thinning help control heat buildup and reduce torque requirements in heavier-duty production or service environments.

Key Features

• Cobalt construction for improved heat and wear resistance in hard and abrasive materials
• 135-degree split point reduces bit walk and lowers entry thrust force
• Oxide and gold coating provides lubricity and surface protection
• Web-thinned, tapered web configuration reduces torque and drilling resistance
• Right-hand spiral flutes for efficient chip evacuation
• Heavy-duty grade jobber-length series for general and production holemaking

Compatibility

Designed as a general-purpose jobber drill bit compatible with any standard drill chuck accepting a 0.1495-inch straight-cylindrical shank, including portable hand drills, benchtop drill presses, and CNC spindles requiring a No. 25 wire-size bit.

Installation Notes

Installation and use should follow safe machine operation practices appropriate to the equipment in use. Secure the straight-cylindrical shank fully in the chuck before operating. Ensure the workpiece is clamped or fixtured to prevent rotation. Use cutting fluid appropriate to the workpiece material to extend bit life and manage heat, particularly when drilling stainless steel or hard alloys.