Guhring 9055230071400 Cobalt Drill Bit Letter K 9/32

Product Description

The GUHRING 9055230071400 is a cobalt jobber length drill bit in size Letter K, equivalent to 9/32 inch (0.2812 inch decimal). Built to DIN 338 standards in M35 cobalt steel, this bit delivers reliable performance in tough workpiece materials where standard high-speed steel loses its edge. The two-flute, right-hand spiral design paired with a 118-degree four-facet split point and web-thinned tip reduces thrust and promotes accurate, self-centering entry. The straight-cylindrical shank measures 9/32 inch and seats securely in standard drill chucks. Finished bright and uncoated, the bit is well-suited for applications where coating adhesion or contamination is a concern. Licensed tradespeople and machinists reaching for consistent, dimension-true holes will find this bit fits standard workflow on the floor or in the field.

This drill bit is rated for use in aluminum and non-ferrous metals as its primary workpiece materials, with material codes K, M, N, and P covered under its application range. The regular spiral and 5xD flute-to-diameter ratio support chip evacuation in those material families. With a flute length of approximately 2.72 inches and a maximum drilling depth of 2.295 inches, the bit handles typical jobber-length boring tasks in plate, billet, or structural stock. It is sold individually and packages at a minimal weight, making it easy to stock as a single-piece replacement or add to a drill index.

Key Features

• M35 cobalt steel construction for improved heat and wear resistance over standard HSS
• 118-degree four-facet split point with web thinning for reduced thrust and self-centering entry
• Right-hand cut, regular spiral, two-flute design promotes controlled chip evacuation
• Built to DIN 338 specification with a diameter tolerance of +0.000 to -0.022 mm
• Straight-cylindrical shank fits standard Jacobs-style and keyed drill chucks without adapters
• Bright uncoated finish maintains dimensional integrity and simplifies regrinding

Compatibility

Designed as an OEM-style jobber length drill bit conforming to DIN 338 standards, compatible with any drill press, hand drill, or CNC spindle accepting a 9/32 inch straight-cylindrical shank.

Installation Notes

Installation is performed by machinists, maintenance mechanics, and metalworking tradespeople using standard drill chucks or collet holders. Ensure the chuck or collet is fully tightened and the shank is fully seated before operation. Set spindle speed appropriate to the workpiece material and bit diameter following published feeds-and-speeds references for cobalt tooling. Inspect the cutting edges before use and do not operate a chipped or re-ground bit beyond its serviceable diameter tolerance.