Precision Twist Drill 6001408 5/64 in Hss Drill Bit

Product Description

The PRECISION TWIST DRILL 6001408 is a high speed steel aircraft extension drill bit designed for reaching into recessed or deep work areas that standard-length bits cannot access. Built to Series 500-12 specifications, it features a 135-degree split point that starts drilling on contact without a center punch, reducing walking and improving hole placement accuracy. The oxide finish provides mild corrosion resistance during storage and use. At 0.0781 inches (5/64 inch) in diameter with a 12-inch overall length, this bit is well suited for aerospace-style and general-purpose drilling applications where extended reach is required. Installation is typically performed by machinists, aircraft maintenance technicians, or sheet metal workers.

This drill bit is built for applications that demand extended reach and precise entry in tight or deep access points. The 1-inch spiral flute length and tapered web configuration aid chip evacuation and reduce torque load during drilling. The straight-cylindrical shank seats securely in standard drill chucks. It conforms to NAS 907 Type B standards, making it appropriate for aerospace maintenance work as well as general industrial and construction drilling tasks where depth of reach is a limiting factor.

Key Features

• 135-degree split point is self-centering — no center punch required
• 12-inch overall length provides extended reach into deep or recessed work areas
• High speed steel construction handles general-purpose drilling across a wide range of materials
• Oxide finish adds mild corrosion protection during storage and handling
• Web-thinned, tapered web reduces cutting resistance and improves chip flow
• Right-hand cutting, 2-flute spiral design for standard drill chuck use
• Meets NAS 907 Type B standards

Compatibility

Designed as an OEM-style replacement or standard addition for applications requiring 5/64-inch diameter aircraft extension drill bits with a straight-cylindrical shank compatible with standard drill chucks.

Installation Notes

This bit is installed and used by machinists, aircraft maintenance technicians, and sheet metal workers using standard or right-angle drill motors. Secure the straight-cylindrical shank fully in the chuck before use and verify chuck tightness. Wear appropriate eye protection and secure workpieces before drilling. Follow applicable workplace safety standards and, for aerospace applications, reference relevant NAS and OEM maintenance documentation.