Precision Twist Drill 6001329 Wire 58 Aircraft Drill Bit

Product Description

The PRECISION TWIST DRILL 6001329 is a wire gauge size 58 aircraft extension drill bit designed for precision drilling in aerospace and general metalworking applications. Ground from high speed steel (HSS) with an oxide finish, it delivers controlled cutting performance in ferrous and non-ferrous materials. The 135-degree split point reduces walking and allows drilling without a center punch in most applications. At 0.042 inches in diameter with a 0.6875-inch flute length, this bit is suited for close-tolerance work where a standard jobber length bit will not fit or reach. It weighs approximately 0.04 pounds. Licensed trades and machinist professionals are the typical end users.

This drill bit is intended for use in aircraft assembly, sheet metal fabrication, and precision mechanical work requiring wire gauge tooling. The Series 501-6 extension design gives additional reach in confined installations or layered material stacks where a standard-length bit cannot access the work zone. General-purpose tool performance makes it appropriate for production and maintenance environments alike. The straight-cylindrical shank seats securely in standard drill chucks and quick-change holders sized to 0.042 inches.

Key Features

• Wire gauge size 58 (0.042 inches) for tight-tolerance hole requirements
• 135-degree drill point angle reduces walking and minimizes entry burring
• High speed steel construction handles ferrous metals and most alloys
• Oxide finish provides mild corrosion resistance and lubricity during cutting
• Web-thinned tapered web improves chip evacuation and reduces thrust force
• Meets NAS 907 Type B standards for aircraft-grade drill bit performance

Compatibility

Designed as an OEM-style replacement and general-use aircraft extension drill bit for applications requiring a wire size 58 straight-cylindrical shank bit conforming to NAS 907 Type B specifications.

Installation Notes

Installation of this drill bit is performed by machinists, aircraft mechanics, and sheet metal technicians using standard drill chucks or quick-change collet systems compatible with 0.042-inch shank diameter tooling. Confirm chuck runout is within acceptable tolerances before use to avoid bit deflection or breakage at this small diameter. Use appropriate cutting fluid for the base material to extend tool life. Follow applicable shop safety procedures and wear eye protection during all drilling operations.