Precision Twist Drill 6001327 Aircraft Extension Drill Bit

Product Description

The PRECISION TWIST DRILL 6001327 is a high speed steel aircraft extension drill bit designed for reaching deep or obstructed hole locations that standard-length bits cannot access. Built to Series 500-12 specifications, it features a 135-degree split point that is self-centering and web-thinned, reducing the walking common with conventional point geometry. The 11/32 inch diameter (0.3438 inches decimal) pairs with a 3-7/16 inch flute length and a 12-inch overall length, giving technicians the reach needed for structural and sheet metal drilling in tight assemblies. The oxide finish provides light corrosion resistance during storage and use. Right-hand spiral flutes with a 4xD flute-to-diameter ratio clear chips efficiently in both ferrous and non-ferrous materials.

This drill bit is suited for aerospace, aviation maintenance, and general industrial applications where extended reach is required. It is commonly used by aircraft mechanics, sheet metal workers, and maintenance technicians drilling through structural panels, frames, and multilayer assemblies. The straight-cylindrical shank is compatible with standard drill chucks. NAS 907 Type B compliance makes it appropriate for use in aerospace MRO environments where standards conformance is required.

Key Features

• 135-degree split point with self-centering geometry reduces walking on entry
• Web-thinned, tapered web construction lowers thrust and improves penetration
• 12-inch overall length provides extended reach for deep or obstructed locations
• High speed steel construction for general-purpose drilling in a range of materials
• Oxide finish for light corrosion resistance
• NAS 907 Type B compliant for aerospace MRO use

Compatibility

Designed as an OEM-style general-purpose aircraft extension drill bit compatible with any standard drill chuck accepting a straight-cylindrical shank of 11/32 inch (0.3438 inches) diameter.

Installation Notes

Installation is performed by machinists, aircraft mechanics, or maintenance technicians using a standard drill press, hand drill, or right-angle drill with an appropriate chuck. Secure the workpiece before drilling and confirm chuck grip on the full shank engagement area. Disconnect or de-energize any equipment being serviced before drilling into live assemblies. Follow applicable shop safety and PPE requirements for metal drilling operations.