Import 22437 Jobber Drill Bit Letter E 0.250 Inch Hss

Product Description

The IMPORT 22437 is a jobber-length drill bit sized to Letter E, equivalent to 0.250 inches, designed for general-purpose metal drilling in trade and industrial applications. It is manufactured from high speed steel with an oxide coating for improved surface hardness and heat resistance. The 118-degree split point reduces walking on entry, making it reliable on flat stock without a center punch. The web-thinned, tapered web configuration reduces cutting thrust. At 4 inches overall length with a 2.75-inch flute, this bit fits standard three-jaw chucks and drill presses used daily in HVAC, plumbing, and electrical trades.

This drill bit is suited for drilling mild steel, aluminum, copper tubing, and similar materials encountered in residential and light commercial trade work. The straight-cylindrical, 0.250-inch shank seats securely in standard keyed and keyless chucks. Right-hand spiral fluting efficiently evacuates chips during through-hole drilling. It is a solid choice for technicians drilling sheet metal panels, electrical enclosures, pipe flanges, and strut channel in the field or on the bench.

Key Features

• Letter E size — 0.250 inches decimal equivalent for precise hole sizing
• 118-degree split point reduces bit walking and lowers entry force
• Web-thinned, tapered web configuration reduces drilling thrust
• Oxide-coated high speed steel for improved wear resistance and heat dissipation
• Regular right-hand spiral flute for efficient chip evacuation
• Straight-cylindrical shank fits standard 0.250-inch or larger chucks

Compatibility

Designed as a general-purpose replacement or stock bit fitting any drill press, hand drill, or drill driver equipped with a chuck accepting a 0.250-inch straight-cylindrical shank. Suitable for Series 314 jobber-length applications.

Installation Notes

Secure the shank firmly in the chuck and verify the bit is centered before starting the cut. Always wear eye protection and secure the workpiece to prevent rotation. For metal drilling, use an appropriate cutting fluid to extend bit life and improve hole quality. Inspect the cutting edges before use and replace if the tip shows chipping or dulling.