Guhring 9006220102600 Cobalt Drill Bit Letter Y

Product Description

The GUHRING 9006220102600 is a cobalt jobber length drill bit sized to Letter Y (0.4039 inches decimal equivalent) with a 130-degree split point and parabolic flute geometry. Built to DIN 338 standards, it is designed for high-performance drilling in materials that demand thermal and wear resistance. The bright uncoated cobalt construction provides rigidity and heat tolerance without a coating that could mask wear. Overall length is 5.25 inches with a flute length of 3.4375 inches and a straight-cylindrical shank matching the 0.4039-inch drill diameter. It is suitable for machinists, maintenance technicians, and trade professionals who require consistent, repeatable hole quality in production or field environments.

This drill bit is rated for use in aluminum and non-ferrous metals, as indicated by the primary workpiece material codes K, N, and P, which cover aluminum alloys, non-ferrous metals, and certain plastics and composites. The parabolic flute profile supports efficient chip evacuation in these materials, reducing heat buildup and helping maintain hole tolerance. The 5xD flute-to-diameter ratio and web-thinned tapered web reduce thrust force at entry. Maximum drilling depth is 2.819 inches (71.61 mm). This bit is well suited to fabrication shops, HVAC equipment manufacturing, plumbing fixture work, and general maintenance drilling applications.

Key Features

• Letter Y size at 0.4039 inches decimal equivalent for standard and tight-tolerance drilling
• Cobalt construction with bright uncoated finish for heat resistance and wear visibility
• 130-degree point angle with web-thinned tapered web reduces entry thrust force
• Parabolic flute geometry promotes fast, clean chip evacuation in aluminum and non-ferrous materials
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• Manufactured to DIN 338 specification for consistent dimensional accuracy

Compatibility

Designed as an OEM-style jobber length drill bit per DIN 338 Series 622 standards, suitable for use with standard drill chucks and collet systems accepting a 0.4039-inch straight shank. Primary workpiece material codes K, N, and P indicate suitability for aluminum alloys, non-ferrous metals, and select plastics.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press, CNC, or hand-drill operation. Secure the workpiece fully before drilling and verify chuck or collet grip on the straight shank before engaging the spindle. Do not exceed the maximum drilling depth of 2.819 inches without retracting to clear chips. Follow applicable shop safety standards and machine manufacturer operating guidelines when selecting feed rate and spindle speed for the workpiece material.