Precision Twist Drill 6001346 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001346 is a high speed steel aircraft extension drill bit designed for deep-reach drilling applications in metal fabrication, aerospace maintenance, and structural assembly work. Built to Series 501-6 specifications, this drill features a 135-degree split point with web thinning for self-centering entry and reduced walking on hard surfaces. The 0.199-inch diameter straight-cylindrical shank fits standard drill chucks, and the 6-inch overall length provides the reach needed to access recessed or obstructed bore locations. An oxide finish offers light corrosion resistance during storage and use. The two-flute spiral design clears chips efficiently during through-hole drilling in steel, aluminum, and similar structural materials.

This drill bit is suited for use in aviation and aerospace maintenance environments, sheet metal shops, and general metalworking where extended reach is required. The wire gauge size 8 designation and 0.199-inch decimal diameter make it a practical choice for structural fastener clearance holes and precision bore work. At 2.4375 inches of flute length, it handles moderate-depth holes without sacrificing chip evacuation. Machinists, aircraft mechanics, and fabricators working under NAS 907 Type B standards will find this drill consistent with those requirements. It is packaged as a single unit and sold individually.

Key Features

• 135-degree split point with web thinning for self-centering, reduced thrust drilling
• 6-inch overall length for extended-reach access in tight or deep bore locations
• 0.199-inch diameter straight-cylindrical shank fits standard drill chucks without adapters
• High speed steel construction handles steel, aluminum, and general-purpose metals
• Oxide finish provides light corrosion protection during storage and field use
• Meets NAS 907 Type B standards for aircraft-grade drill bit performance

Compatibility

Designed as an OEM-style aircraft extension drill bit conforming to NAS 907 Type B standards, suitable for use with standard straight-cylindrical shank drill chucks in hand drill and drill press applications requiring a 0.199-inch diameter bore.

Installation Notes

This drill bit is installed and operated by machinists, aircraft mechanics, and metal fabricators using standard drill chucks or drill presses. Secure the workpiece firmly before drilling and verify chuck grip on the full shank diameter before operation. Use appropriate cutting fluid for the base material to extend tool life and maintain bore quality. Follow applicable shop safety and personal protective equipment requirements when operating rotary cutting tools.