Hertel C.402.0975 Jobber Drill 9.75 Mm Hss Oxide

Product Description

The HERTEL C.402.0975 is a jobber-length twist drill designed for general-purpose drilling in metal, wood, and similar materials. It measures 9.75 mm (0.3839 inches) in diameter with a 130 mm overall length and a 95 mm flute length. The 118-degree standard point angle is the industry-standard geometry for versatile, everyday drilling applications. The high speed steel construction with an oxide coating provides moderate heat and wear resistance for shop and field use. Two right-hand spiral flutes evacuate chips efficiently during through-hole and blind-hole drilling. The straight cylindrical shank seats directly into standard drill chucks without adapters.

This jobber drill is suited for machinists, maintenance technicians, fabricators, and general tradespeople who need a reliable general-purpose bit in the 9 mm to 10 mm size range. Typical applications include drilling clearance holes, pilot holes, and through holes in mild steel, aluminum, plastics, and wood. The oxide finish makes this bit appropriate for dry drilling or light cutting fluid applications in production and maintenance environments.

Key Features

• 9.75 mm diameter — falls within the 9.00 to 10.00 mm size range for standard jobber series
• 118-degree standard point angle for general-purpose drilling across common materials
• High speed steel construction with oxide coating for wear and heat resistance
• Two right-hand spiral flutes for efficient chip evacuation
• 130 mm overall length with 95 mm flute length — standard jobber proportions
• Straight cylindrical shank fits standard 3-jaw drill chucks without adapters

Compatibility

Designed as a general-purpose jobber drill compatible with any standard drill chuck accepting a straight cylindrical shank in the 9.75 mm diameter range.

Installation Notes

This drill bit is installed by machinists and maintenance technicians using standard drill presses, CNC drilling machines, or hand-held power drills equipped with a keyed or keyless chuck. Secure the straight shank fully into the chuck before operation and verify runout is within acceptable tolerance for the application. Use appropriate cutting fluid or coolant for steel drilling to extend tool life, noting that this bit is not designed for coolant-through delivery. Inspect the cutting edges for wear or chipping before each use and replace when point geometry is compromised.