Precision Twist Drill 6001180 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001180 is a 23/64 inch (0.3594 inch decimal) high speed steel aircraft extension drill bit designed for deep-reach drilling applications where a standard-length bit cannot access the work. The 135-degree split point geometry is self-centering, eliminating the need for a center punch and reducing walking on entry. A tapered web-thinned design reduces thrust and improves chip evacuation. The oxide finish provides light corrosion resistance and reduces friction during cutting. This bit is installed and used by machinists, aircraft maintenance technicians, metalworkers, and general fabricators who need extended reach in steel, aluminum, and similar materials.

The 6001180 fits into standard drill chucks via its straight-cylindrical shank, which shares the same 23/64 inch diameter as the cutting end. With a 3.5-inch flute length and 6-inch overall length, it provides the additional reach needed when drilling through deep structural members, stacked sheet metal, or confined assemblies. The Series 500-6 designation places it within a standardized aircraft extension drill family built to NAS 907 Type B standards, making it a recognized fit for aerospace maintenance, structural fabrication, and general industrial drilling where extension length is required.

Key Features

• 135-degree split point is self-centering for accurate entry without center punching
• Extended 6-inch overall length with 3.5-inch flute length for deep-reach applications
• High speed steel construction handles general-purpose drilling in ferrous and non-ferrous metals
• Tapered web with web thinning reduces cutting thrust and improves chip flow
• Oxide finish reduces friction and provides light surface protection
• Built to NAS 907 Type B standards for aircraft and structural maintenance applications

Compatibility

Designed as a Series 500-6 aircraft extension drill bit conforming to NAS 907 Type B standards, compatible with any standard drill chuck accepting a straight-cylindrical shank of 23/64 inch diameter. Suitable for general-purpose drilling in metalworking and aerospace maintenance applications.

Installation Notes

This bit is used by machinists and maintenance technicians in drill presses, hand drills, and right-angle drill motors. Secure the shank fully in the chuck and verify concentricity before operation. Use appropriate cutting fluid when drilling ferrous metals to extend tool life and manage heat buildup. Inspect the cutting edges for wear or chipping before each use, as a damaged split point will affect entry accuracy and hole quality.