Hertel C.E11.0953 Extra Length Drill Bit 3/8 in Hss

Product Description

The HERTEL C.E11.0953 is a high-speed steel extra length drill bit engineered for deep-hole drilling applications where standard-length bits cannot reach. It carries a 3/8-inch diameter, a 118-degree point angle, and an oxide finish that reduces friction and provides light corrosion resistance during service. With a 12-inch flute length and an 18-inch overall length, this bit is built for structural, mechanical, and trade work where extended reach is required. Machinists, millwrights, pipefitters, and electricians reach for extra-length bits when boring through thick stock, deep walls, or stacked materials that outrun conventional tooling.

This bit is suited to general-purpose drilling in metal, wood, and plastic where depth clearance is the primary constraint. Typical applications include boring conduit pathways through deep structural members, drilling fastener holes through thick-walled pipe hangers or framing, and accessing difficult clearance points in mechanical rooms or panel installations. The two-flute geometry keeps chips evacuating cleanly over the extended flute length, reducing the risk of bit binding on deep passes.

Key Features

• 3/8-inch diameter with two-flute design for efficient chip evacuation on deep cuts
• 118-degree point angle — standard geometry suited to a wide range of materials
• 18-inch overall length and 12-inch flute length provide extended reach beyond standard bits
• High-speed steel construction handles the heat generated in continuous or deep drilling
• Oxide finish reduces surface friction and offers light corrosion resistance
• General-purpose grade — appropriate for metal, wood, and plastic substrates

Compatibility

Designed as a general-purpose extra-length drill bit compatible with standard 3/8-inch keyed and keyless drill chucks used in hand drills, drill presses, and magnetic base drills.

Installation Notes

Secure the bit fully in the chuck before operation and verify the chuck key is removed before starting the drill. Use cutting fluid or oil when drilling metal to extend bit life and prevent overheating, especially on deep passes. Reduce feed pressure as the bit approaches breakthrough to avoid grabbing. Inspect the cutting edges before each use — a dull or chipped tip on an extra-length bit increases deflection risk on deep holes.