Hertel C.E10.0318 Extra Length Drill Bit 1/8 in Hss

Product Description

The HERTEL C.E10.0318 is an extra length twist drill bit designed for applications that require extended reach beyond what a jobber-length bit can provide. Ground from high-speed steel with an oxide finish, it carries a 1/8 inch diameter and a 118-degree split-point angle that self-centers on entry and reduces walking on flat stock. With a 9-inch flute length and a 12-inch overall length, it is well suited for deep-hole drilling in metal, wood, and plastic. Machinists, pipefitters, and maintenance technicians typically reach for extra length bits when drilling through thick structural members, deep housings, or confined spaces with limited spindle clearance.

This bit is used across industrial, commercial, and mechanical maintenance environments wherever standard-length tooling cannot reach the target depth. Typical applications include through-hole drilling in structural steel, conduit layout work, HVAC equipment frames, pump housings, and fixture fabrication. The two-flute geometry evacuates chips efficiently during deep passes. The oxide finish provides a degree of corrosion resistance and reduces friction during cutting. It is sold individually and is compatible with any drill chuck or collet sized for a 1/8 inch straight shank.

Key Features

• 1/8 inch diameter with 0.1250 inch decimal equivalent for precise chuck fitment
• 12-inch overall length provides extended reach for deep or obstructed drilling locations
• 9-inch flute length allows maximum chip clearance during deep-hole passes
• 118-degree drill point angle for general-purpose use across metal, wood, and plastic
• High-speed steel construction supports use at standard drill press and handheld drill speeds
• Oxide finish reduces friction and provides light corrosion resistance

Compatibility

Designed as a general-purpose extra length drill bit for use in any drill press, magnetic drill, or handheld drill with a chuck or collet accepting a 1/8 inch straight shank.

Installation Notes

Secure the shank fully in the chuck before drilling and verify runout is within acceptable limits to avoid bit deflection on long-reach cuts. Reduce feed rate and apply cutting fluid when drilling ferrous materials to extend tool life and prevent work hardening. Extra length bits are more susceptible to flex and breakage than jobber-length bits — use the slowest adequate spindle speed and avoid side loading. Licensed tradespeople should follow applicable shop safety procedures and any site-specific PPE requirements when operating drilling equipment.