Guhring 9005490102600 Jobber Drill Bit Letter Y Hss

Product Description

The GUHRING 9005490102600 is a jobber length drill bit sized to Letter Y (0.4039 inches) and manufactured from high speed steel with a bright, uncoated finish. Built to DIN 338 standards, this is a high-performance two-flute drill with a parabolic flute design and a 130-degree split point that has been web-thinned for easier penetration and reduced thrust. The straight-cylindrical shank measures 0.4039 inches in diameter, and the overall length is 5.25 inches. It is intended for professional machinists and metalworking tradespeople who need consistent, repeatable hole quality in production or maintenance drilling applications.

This drill bit is rated for use in aluminum and non-ferrous materials, as indicated by its K, N, and P workpiece material codes under the DIN classification system. The parabolic flute geometry improves chip evacuation in deeper holes, making it well suited for through-hole and blind-hole drilling where chip packing is a concern. The 5xD flute-to-diameter ratio and a maximum drilling depth of 2.819 inches support moderate-depth applications without the need for peck cycling in most setups. This bit fits standard drill chucks and CNC tool holders that accept a 0.4039-inch straight shank.

Key Features

• Letter Y size: 0.4039 inches decimal equivalent for precise tool selection
• 130-degree drill point angle with web thinning for reduced entry thrust and cleaner starts
• Parabolic flute geometry promotes efficient chip evacuation in aluminum and non-ferrous stock
• DIN 338 standard construction ensures dimensional consistency and interchangeability
• Bright, uncoated finish suitable for use with cutting fluid in general metalworking
• Right-hand cut, straight-cylindrical shank compatible with standard chucks and collets

Compatibility

Designed as an OEM-style jobber length drill bit conforming to DIN 338, suitable for use in standard drill chucks, CNC machining centers, and manual drill presses that accept a 0.4039-inch straight-cylindrical shank. Primary workpiece material compatibility is rated for aluminum and non-ferrous metals (DIN material codes K, N, and P).

Installation Notes

Installation and use should be performed by qualified machinists or metalworking tradespeople familiar with cutting tool safety practices. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable limits. Always apply an appropriate cutting fluid when drilling non-ferrous metals to extend tool life and improve hole finish. Inspect the cutting edges for wear or chipping before each use and replace the bit if the point geometry is compromised.