Hertel C.402.1040 Jobber Drill 10.40mm Hss Oxide

Product Description

The HERTEL C.402.1040 is a jobber-length twist drill bit designed for general-purpose hole-making in a wide range of materials. It features a 10.40 mm (0.4094 inch) diameter, a 118-degree standard point angle, and is manufactured from high speed steel with an oxide finish for added surface protection and reduced friction during drilling. The straight-cylindrical shank seats securely in standard drill chucks, and the right-hand spiral flute geometry promotes efficient chip evacuation. With an overall length of 133 mm and a flute length of 98 mm, this bit suits typical jobber-length drilling applications in metalworking, fabrication, and maintenance environments.

This drill bit is suited for production and job-site use where a general-purpose HSS jobber drill is specified. It fits applications in light to medium ferrous and non-ferrous metals, plastics, and similar materials. The oxide coating provides a degree of lubricity and corrosion resistance compared to bare HSS, making it a practical choice for shops and technicians running standard drill press, hand drill, or CNC operations at moderate speeds and feeds.

Key Features

• 10.40 mm (0.4094 inch) diameter for precise hole sizing
• 118-degree standard point angle for general-purpose drilling
• High speed steel construction for durability across common workpiece materials
• Oxide coating reduces friction and provides surface protection
• Right-hand cut with spiral flute for efficient chip removal
• Straight-cylindrical shank compatible with standard drill chucks

Compatibility

Designed as a general-purpose jobber drill bit compatible with standard keyed and keyless drill chucks accepting straight-cylindrical shanks in the 0.4000 to 0.5000 inch (10.00 to 12.50 mm) diameter range.

Installation Notes

Installation and use should be performed by qualified machinists, fabricators, or maintenance technicians familiar with drilling operations. Secure the workpiece and ensure the drill chuck is fully tightened before operation. Select appropriate spindle speed and feed rate for the workpiece material to avoid overheating the cutting edge. Do not exceed the rated capacity of the drilling equipment being used.