Hertel C.E08.0635 Extra Length Drill Bit 1/4 in Hss

Product Description

The HERTEL C.E08.0635 is a 1/4 inch extra length twist drill bit designed for general-purpose drilling in metal, wood, and plastic. It is manufactured from high-speed steel with an oxide finish that provides light corrosion resistance and reduces friction during cutting. The 118-degree split point angle is a standard geometry suited for a wide range of materials. With an overall length of 8.0 inches and a flute length of 5.5 inches, this bit reaches deeper into workpieces and fixtures than standard-length drills. Machinists, fabricators, and maintenance technicians install and use this bit in drill presses, hand drills, and milling setups.

This extra length drill bit is well suited for applications requiring extended reach, such as drilling through structural members, deep fixtures, or stacked material. The 1/4 inch diameter and two-flute design allow efficient chip evacuation in both through-hole and blind-hole applications. It is appropriate for light-duty production work and maintenance drilling in metal fabrication shops, HVAC and mechanical contracting, and general industrial environments.

Key Features

• 1/4 inch diameter with 0.2500 inch decimal size for precise hole tolerancing
• 8.0 inch overall length provides extended reach beyond standard jobber bits
• 5.5 inch flute length supports deep-hole chip clearance
• High-speed steel construction retains hardness under heat generated during cutting
• Oxide finish reduces surface friction and offers light corrosion protection
• 118-degree drill point angle is compatible with a broad range of workpiece materials
• Two-flute design promotes efficient chip evacuation

Compatibility

Designed as a general-purpose extra length drill bit compatible with any 1/4 inch drill chuck, collet, or keyless chuck system accepting straight-shank bits.

Installation Notes

Installation and use should be performed by a qualified machinist or tradesperson familiar with rotating cutting tools. Secure the workpiece and verify chuck or collet tightness before operation. Always wear appropriate eye protection and observe safe RPM ranges for the material being drilled. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point is damaged.