Precision Twist Drill 6001203 3/64 in Hss Aircraft Drill

Product Description

The PRECISION TWIST DRILL 6001203 is a high speed steel aircraft extension drill bit designed for deep-reach drilling in tight or recessed locations. Built to Series 500-6 specifications, it carries a 135-degree split point that reduces walking and improves entry accuracy on metal workpieces. The oxide finish provides a degree of lubricity and corrosion resistance during cutting operations. At 6 inches overall length with a 3/4-inch flute, this bit extends reach well beyond a standard jobber-length drill while maintaining a 3/64-inch (0.0469 inch decimal) diameter. Machinists, aircraft maintenance technicians, and sheet-metal workers are the primary users of this tool.

This drill bit is suited for general-purpose drilling in ferrous and non-ferrous metals where extended reach is required. Typical applications include aircraft sheet metal work, structural assembly, and fabrication tasks where standard-length drills cannot access the work zone. The straight-cylindrical shank seats in conventional drill chucks without adapters. The web-thinned, tapered-web construction reduces thrust load, which matters when drilling small-diameter holes repeatedly.

Key Features

• 135-degree standard point angle for reduced walking on entry without a center punch
• Web-thinned tapered web lowers thrust requirement during drilling
• High speed steel construction handles ferrous metals and general shop materials
• Oxide finish improves lubricity and offers light corrosion resistance
• 6-inch overall length provides extended reach for aircraft and structural applications
• Right-hand spiral flute with two flutes for efficient chip evacuation
• Meets NAS 907 Type B standard

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for applications conforming to NAS 907 Type B specifications in aircraft and general metal fabrication environments.

Installation Notes

This bit is installed by a machinist or aircraft maintenance technician using a standard drill press, hand drill, or air drill with a compatible chuck sized for straight-cylindrical shanks. Secure the workpiece firmly before drilling and use appropriate cutting fluid for extended tool life in hard metals. Inspect the cutting edges before use and replace the bit if chipping or excessive wear is observed. Always follow applicable shop safety procedures and relevant industry standards when operating rotary cutting tools.