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The PRECISION TWIST DRILL 6001211 is a 5/32-inch diameter aircraft extension drill bit designed for deep-reach drilling applications where a standard-length bit cannot access the work zone. Built from high-speed steel with an oxide finish, it runs a 135-degree split point that is self-centering and web-thinned for clean entry without a pilot hole. The 2-inch spiral flute length provides efficient chip evacuation, and the 6-inch overall length gives technicians the reach needed for structural and sheet-metal work. Right-hand cutting direction, straight-cylindrical shank, and a tapered web configuration round out the design. Installed by aviation maintenance technicians, machinists, and sheet-metal tradespeople working on general-purpose drilling tasks.
This bit is suited for production and maintenance drilling in aerospace, industrial, and general fabrication environments. The extended 6-inch overall length and 5/32-inch diameter make it a practical choice for drilling through stacked materials, into recessed cavities, or along structural members where clearance is limited. The Series 500-6 designation places it within PRECISION TWIST DRILL's general-purpose aircraft extension line, and it meets NAS 907 Type B standards, which are commonly required in aerospace and defense maintenance operations.
Designed as a general-purpose aircraft extension drill bit suitable for use in standard drill chucks and right-angle drill motors accepting a 5/32-inch straight-cylindrical shank.
This drill bit is installed and operated by machinists, aviation maintenance technicians, and sheet-metal workers using portable or stationary drilling equipment. Secure the straight-cylindrical shank firmly in the chuck before operation and verify the work piece is clamped or fixtured to prevent movement. Use appropriate cutting fluid for the material being drilled to extend tool life and improve cut quality. Inspect the split point for chipping or wear before each use and replace the bit if the cutting edges are damaged.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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