Hertel C.E14.0635 Extra Length Cobalt Drill Bit 1/4 in

Product Description

The HERTEL C.E14.0635 is an extra length cobalt drill bit designed for drilling operations that require extended reach beyond what a standard-length bit can provide. Built from cobalt high-speed steel, it handles harder work materials and elevated heat better than standard HSS bits. The 135-degree split-point tip reduces walking on entry and requires no center punch on most surfaces. At 12 inches overall length with a 9-inch flute length, this bit is suited for deep-hole drilling in metal, stainless steel, cast iron, and hard alloys. It carries a bright uncoated finish and is a general-purpose grade appropriate for shop, maintenance, and fabrication use.

This bit is used in general-purpose metalworking applications where standard-length drill bits cannot reach — including deep structural members, framing plates, machinery frames, and fabricated assemblies. It is appropriate for use in drill presses, magnetic drills, and hand-held electric drills. Machinists, millwrights, ironworkers, and maintenance technicians regularly reach for extra-length cobalt bits when clearance or depth requirements exceed the capacity of a jobber-length drill.

Key Features

• Cobalt tool material for improved heat and wear resistance in hard metals
• 135-degree split-point tip reduces thrust and eliminates walking at entry
• 12-inch overall length provides extended reach for deep-hole applications
• 9-inch flute length supports chip evacuation over the full depth of cut
• Bright uncoated finish — no coating to chip or delaminate during heavy use
• Two-flute geometry balances chip clearance with cutting edge strength

Compatibility

Designed as an OEM-style general-purpose extra length drill bit compatible with standard drill chucks accepting a 1/4-inch shank.

Installation Notes

Installation and use should be performed by qualified machinists, maintenance technicians, or trade professionals familiar with drilling equipment and metal-cutting practices. Always secure the workpiece before drilling and confirm chuck capacity matches the 1/4-inch shank diameter. Reduce feed pressure when breaking through the back side of the material to prevent grabbing. Inspect the cutting edges before each use and replace the bit if the tip shows chipping or heat discoloration that cannot be corrected by resharpening.