Precision Twist Drill 5996097 Cobalt Drill Bit Wire 44

Product Description

The PRECISION TWIST DRILL 5996097 is a cobalt aircraft extension drill bit designed for drilling into hard metals, high-temperature alloys, and tough aerospace-grade materials. It carries a wire gauge size of 44, which corresponds to 0.086 inches in decimal. The 135-degree split point is self-centering, reducing the need for a center punch and minimizing walking on entry. A straw finish indicates the cobalt content has been heat-treated for added hardness and wear resistance. The straight-cylindrical shank seats securely in standard drill chucks. This bit is used by aerospace technicians, machinists, and industrial maintenance professionals who require precision in tight-tolerance applications.

The 5996097 belongs to PRECISION TWIST DRILL Series CO501-6, a line of extended-length cobalt drill bits intended for drilling applications that require deeper reach than standard-length bits allow. The 1.125-inch flute length at a 4xD ratio provides chip clearance during extended cuts. With a 6-inch overall length, it is well suited for reaching into recessed areas, drilling through stacked materials, or working in fixtures where a standard-length bit cannot reach. This bit cuts right-hand and is appropriate for use in ferrous metals, stainless steel, titanium, and similar materials where high-speed steel bits wear prematurely.

Key Features

• Cobalt tool material resists heat and wear when drilling hard metals and alloys
• 135-degree split point with self-centering geometry reduces walking and eliminates center-punch steps
• Straw finish indicates heat-treated cobalt for extended service life
• Extended 6-inch overall length provides reach into recessed or stacked workpieces
• Tapered web with web thinning reduces thrust and improves chip evacuation
• Straight-cylindrical shank compatible with standard drill chucks
• Conforms to NAS 907 Type J standards for aerospace drill bit geometry

Compatibility

Designed as an OEM-style general-purpose cobalt aircraft extension drill bit for use in standard drill chucks and CNC spindles accepting a 0.086-inch straight-cylindrical shank.

Installation Notes

This drill bit is installed by machinists, tool and die technicians, and aerospace maintenance professionals. Secure the shank fully in the chuck before operation and verify runout is within tolerance for the application. Use appropriate cutting fluid when drilling stainless steel, titanium, or other work-hardening alloys to extend bit life and manage heat buildup. Follow applicable shop safety standards and machine guarding requirements during use.