Hertel H95006210 Jobber Drill Bit Letter K Hss

Product Description

The HERTEL H95006210 is a Letter K jobber-length drill bit designed for general-purpose holemaking in metal, wood, and composite materials. Built from high speed steel with an oxide finish, it measures 0.2810 inches in diameter and 4.25 inches overall length. The 137-degree split point reduces walking on entry and lowers thrust requirements compared to a conventional 118-degree point. Two spiral flutes with a regular helix clear chips efficiently during through-hole drilling. This bit is sized for production and maintenance applications where a heavy-duty HSS jobber drill is the standard tool of choice.

This drill bit is suited for use in hand-held drills, drill presses, and CNC drilling operations across light manufacturing, maintenance, and fabrication settings. The Letter K diameter, equal to 0.2810 inches, is a common size for tapping prep and clearance holes in residential and commercial trade work. Machinists, millwrights, pipefitters, and general maintenance technicians are the primary users. It is sold individually and conforms to ANSI jobber-length standards.

Key Features

• Letter K diameter — 0.2810 inches decimal equivalent for precise sizing
• 137-degree split point reduces entry walking and lowers feed pressure
• High speed steel construction rated for heavy-duty drilling applications
• Oxide finish provides lubricity and basic corrosion resistance
• 2-flute regular spiral design promotes consistent chip evacuation
• 3 flats on the shank help reduce bit slippage in standard chucks

Compatibility

Designed as an ANSI-standard jobber-length drill bit compatible with any 3-jaw chuck or drill press accepting a straight shank in the 0.2500 to 0.3000 inch diameter range.

Installation Notes

Secure the shank firmly in the chuck before operation and confirm the workpiece is clamped or fixtured. Use cutting fluid or a suitable lubricant when drilling ferrous metals to extend tool life and maintain hole quality. Do not exceed the recommended RPM range for the material being drilled — higher speeds without adequate feed rate will cause premature wear on HSS tooling. Inspect the point for chipping or dullness before each use; a worn split point increases thrust and reduces hole accuracy.