Precision Twist Drill 6001503 No. 32 Hss Extension Drill

Product Description

The PRECISION TWIST DRILL 6001503 is a No. 32 wire-size aircraft extension drill bit manufactured from high speed steel with an oxide finish. The bit measures 0.116 inches in diameter with a 6-inch overall length, providing the reach required for deep-hole and extension drilling operations common in aerospace, sheet metal, and structural fabrication work. The 135-degree split point is self-centering and web-thinned, reducing the force needed to start a hole and improving chip evacuation. Licensed HVAC technicians, electricians, pipefitters, and metal fabricators working with tight access areas rely on the extended reach of this bit when standard-length tooling cannot reach the work surface.

This drill bit is suited for general-purpose drilling in steel, aluminum, and other metals typically encountered in aircraft and industrial maintenance applications. The Series 501-6 designation identifies it as part of a family of aircraft extension drills built to NAS 907 Type B standards. The 1.625-inch flute length at a 4xD ratio supports efficient chip clearance during through-hole and blind-hole drilling in production and maintenance environments. It is well matched to handheld and drill-press setups where extension reach is required.

Key Features

• No. 32 wire size, 0.116 inches diameter, straight-cylindrical shank for standard chuck compatibility
• 135-degree split point with self-centering geometry eliminates the need for a center punch on most metals
• Web-thinned, tapered web configuration reduces thrust and improves penetration rate
• High speed steel construction with oxide finish for corrosion resistance and reduced friction
• 6-inch overall length for extended-reach applications where standard bits cannot access the work
• Right-hand spiral flute with 1.625-inch flute length promotes chip removal in deep cuts
• Meets NAS 907 Type B standards for aircraft-grade drilling applications

Compatibility

Designed as an OEM-style aircraft extension drill bit for general-purpose use in No. 32 wire-size applications across aerospace maintenance, sheet metal fabrication, and structural assembly work.

Installation Notes

Installation and use of this drill bit is performed by machinists, fabricators, and maintenance technicians working with metal substrates. Secure the straight-cylindrical shank firmly in a standard drill chuck before operation and verify runout before beginning the cut. Power down and de-energize any nearby electrical systems or pneumatic lines before drilling into panels or structural members. Do not exceed the recommended feed rate for the material being drilled, as excessive force can cause bit deflection or premature wear given the extended length.