Precision Twist Drill 5996065 7/64 in Cobalt Drill Bit

Product Description

The PRECISION TWIST DRILL 5996065 is a screw machine length cobalt drill bit designed for high-performance drilling in hard and abrasive materials. Built to Series M41CO standards and conforming to ANSI specifications, this bit features a 135-degree split point for reduced walking and faster penetration without a center punch. The straight-cylindrical shank measures 7/64 inch (0.1100 inches decimal) in diameter with an overall length of 1-7/8 inches and a flute length of 7/8 inch. The web-thinned, tapered web construction reduces thrust and improves chip evacuation in demanding applications. This is a right-hand cut tool intended for use in drill presses, CNC machines, and hand-held power drills.

The 5996065 is built for machinists, maintenance technicians, and fabricators working with hard materials including hardened steels, stainless steel, and other tough alloys where standard high-speed steel bits wear prematurely. The screw machine length format provides added rigidity over jobber-length bits, making it well suited for close-tolerance drilling in tight setups or on short-travel spindles. It is sold individually and is appropriate for production and maintenance shop environments alike.

Key Features

• M41 cobalt steel construction for heat resistance and extended tool life in hard materials
• 135-degree split point reduces thrust and eliminates walking on flat surfaces
• Web-thinned tapered web improves chip flow and reduces cutting resistance
• Screw machine (stub) length format provides greater rigidity than jobber-length bits
• Right-hand spiral flute with 2.5xD flute-to-diameter ratio
• ANSI-conforming geometry for consistent fit in standard drill chucks and collets

Compatibility

Designed as an OEM-style replacement or direct-use screw machine drill bit compatible with any standard drill chuck or collet accepting a straight-cylindrical shank in the 7/64 inch diameter range.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or maintenance technicians familiar with cutting tool safety. Secure the shank fully in the chuck or collet before operation and confirm spindle speed is appropriate for the workpiece material and bit diameter. Do not exceed the rated cutting capacity of the machine or apply excessive side-loading to the bit. Use appropriate cutting fluid or coolant for hard materials to extend tool life, noting that this bit does not have through-coolant capability.