Precision Twist Drill 5996050 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5996050 is a cobalt screw machine length drill bit designed for high-performance drilling in hard and tough materials. Built to ANSI standards and manufactured from M41 cobalt high-speed steel, this bit delivers improved heat and wear resistance compared to standard HSS tooling. It features a 135-degree split point that reduces walking on entry and requires less feed pressure at the start of the cut. The straight cylindrical shank and stub-length body make it well-suited for drill presses, CNC machining centers, and screw machine applications where rigidity and precision are priorities.

This bit is rated for use on hard workpiece materials including hardened steels, stainless alloys, and similarly demanding stock. The screw machine length format — shorter than a jobber bit — provides added rigidity and reduced deflection, which is critical when holding tight tolerances in production or repetitive drilling operations. The 2.5xD flute-to-diameter ratio promotes efficient chip evacuation. This bit ships individually and is appropriate for machinists, tool-and-die technicians, and maintenance professionals working in industrial and manufacturing environments.

Key Features

• M41 cobalt high-speed steel construction for extended tool life in hard materials
• 135-degree split point reduces drill walk and lowers entry feed pressure
• Web-thinned, tapered web configuration improves cutting efficiency
• Screw machine length body increases rigidity and reduces deflection versus jobber length
• Right-hand cut with regular spiral and straight cylindrical shank
• Meets ANSI specification standards

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use in screw machines, drill presses, and CNC equipment requiring a wire size 16 (0.1770 inch) straight-shank drill in the M41CO series.

Installation Notes

Installation of drill bits should be performed by qualified machinists or maintenance technicians following standard lockout/tagout procedures before changing tooling in any powered equipment. Ensure the chuck or collet is properly cleaned and the shank is fully seated before operation. Do not exceed the recommended feed and speed parameters for the workpiece material. Use appropriate cutting fluid or coolant where required by the application, noting this bit does not support through-coolant delivery.