Precision Twist Drill 6001311 Aircraft Drill Bit 52

Product Description

The PRECISION TWIST DRILL 6001311 is a wire-gauge aircraft extension drill bit designed for precision drilling in tight-clearance and deep-reach applications. Ground from high speed steel with an oxide finish, this bit carries a 135-degree split point that is self-centering and web-thinned to reduce thrust and walking on entry. The straight-cylindrical shank measures 0.0635 inches in diameter, matching the drill bit size, and the spiral flute runs 0.875 inches in length. It is sized to wire gauge No. 52 with a decimal diameter of 0.0635 inches, making it a standard choice where close-tolerance hole sizing is required. Licensed trades and aerospace maintenance technicians are the primary installers.

This drill bit is built for aircraft and general-purpose metalworking where a standard jobber-length bit cannot reach the worksite. The extended overall length of 6 inches combined with the 4xD flute-to-diameter ratio gives adequate chip clearance in deeper bores. Typical applications include airframe maintenance, structural assembly, and precision machining work where a wire-gauge hole size is called out by drawing or specification. The Series 501-6 designation places it within a recognized product line of aircraft-type extension drills manufactured to NAS 907 Type B standards.

Key Features

• 135-degree split point with web thinning reduces entry thrust and eliminates center-punch requirements
• Self-centering geometry maintains hole position accuracy on curved or angled surfaces
• High speed steel construction provides hardness and heat resistance for drilling steel, aluminum, and similar metals
• Oxide finish provides mild corrosion resistance during storage and light service
• Straight-cylindrical shank seats in standard drill chucks without the need for a specialized holder
• Right-hand cutting, two-flute spiral design promotes efficient chip evacuation

Compatibility

Manufactured to NAS 907 Type B standards as a Series 501-6 aircraft extension drill bit. Designed as an OEM-style replacement or direct substitute for wire gauge No. 52 aircraft extension drill bits in general-purpose and aerospace drilling applications.

Installation Notes

Installation is performed by machinists, aircraft maintenance technicians, or qualified tradespeople using a standard hand drill, drill press, or pneumatic drill motor with a compatible chuck. Secure the workpiece before drilling and verify that the chuck is properly tightened on the straight-cylindrical shank to prevent slippage. Use appropriate cutting fluid for the base material to extend bit life and maintain hole quality. Follow applicable facility safety protocols and relevant industry standards when performing drilling operations on structural components.