Hertel C.E09.0992 Extra Length Drill Bit 0.3906 in Hss

Product Description

The HERTEL C.E09.0992 is an extra length twist drill bit designed for through-hole and deep-hole drilling in metal, wood, and general-purpose materials. Built from high-speed steel (HSS) with an oxide finish, it delivers solid wear resistance and heat tolerance in production and maintenance applications. The bit measures 10 inches overall with a 7.5-inch flute length, giving it the reach needed to bore through thick stock, deep sections, or stacked materials that standard-length bits cannot access. The 118-degree drill point angle is the industry-standard geometry suited for a wide range of workpiece materials. This bit is sized at 0.3906 inches (25/64 inch) diameter and is appropriate for machinists, maintenance technicians, pipefitters, and fabricators.

This drill bit fits standard drill press chucks, magnetic base drills, and portable hand drills with compatible chuck capacity. Its extra overall length of 10 inches makes it well-suited for structural work, deep plate drilling, and applications where standard jobber-length bits fall short. General-purpose grade construction means it is appropriate for intermittent production use and maintenance drilling across ferrous and non-ferrous materials in shop, field, and plant environments.

Key Features

• High-speed steel construction for heat resistance and durability in general-purpose drilling
• Oxide finish reduces friction and provides mild corrosion protection during storage and use
• 118-degree drill point angle suits a broad range of material types including mild steel, aluminum, and plastics
• 10-inch overall length with 7.5-inch flute length for deep-reach drilling applications
• Two-flute design provides efficient chip evacuation in deep-hole work
• 0.3906-inch (25/64 inch) diameter for precise fit to standard fastener clearance and through-hole requirements

Compatibility

Designed as a general-purpose extra length drill bit compatible with standard three-jaw drill chucks accepting shank diameters up to 0.3906 inches, suitable for drill presses, magnetic base drills, and hand drills used in fabrication and maintenance applications.

Installation Notes

This bit should be installed by a qualified machinist or maintenance technician familiar with drill press or portable drill operation. Secure the bit firmly in the chuck before operation and verify chuck capacity matches the shank diameter. Use appropriate cutting fluid when drilling ferrous metals to extend bit life and reduce heat buildup. Wear proper eye protection and ensure the workpiece is securely clamped before drilling.