Hertel 42292 Cobalt Jobber Drill Bit 9.5 Mm 135 Deg

Product Description

The HERTEL 42292 is a cobalt jobber length drill bit designed for drilling into tough ferrous and non-ferrous metals, stainless steel, and hard alloys where standard high-speed steel bits fall short. Built from M35 cobalt material grade, it features a 135-degree split point that self-centers on contact, reducing walking and the need for a center punch. The straight-cylindrical shank fits standard drill chucks. With an overall length of 125 mm (approximately 4.92 inches) and a 2-flute spiral configuration, this bit is sized for production and maintenance drilling applications handled by machinists, millwrights, and industrial maintenance technicians.

This drill bit is suited for use in vertical mills, drill presses, and hand-held drill drivers in industrial, commercial, and job-site environments. The 9.5 mm diameter (0.374 decimal inch) falls within the 9.00-10.00 mm size range and is a common size for clearance holes, pilot drilling, and through-hole operations in metal fabrication and mechanical assembly work. Right-hand cutting direction is standard for conventional drilling setups.

Key Features

• M35 cobalt material grade for heat resistance and extended tool life in hard metals
• 135-degree split point self-centers and reduces thrust force required
• Bright/uncoated finish maintains dimensional accuracy without coating buildup
• Regular spiral flute with 81 mm (3.189 inch) flute length promotes chip evacuation
• Straight-cylindrical shank for compatibility with standard drill chucks
• Right-hand cut, 2-flute design for conventional drilling in a wide range of materials

Compatibility

Designed as a jobber length replacement drill bit for use in standard drill chucks accepting straight-cylindrical shanks; fits drill presses, mills, and hand-held drivers configured for 9.5 mm tooling.

Installation Notes

Installation is performed by machinists or maintenance technicians with appropriate machine operation training. Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or coolant for hard metal applications to extend bit life, even though this bit does not support coolant-through delivery. Power down and lock out the machine before changing bits.