Precision Twist Drill 5999441 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999441 is a screw machine length drill bit designed for high-performance drilling in demanding shop and field applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point that reduces walking and minimizes thrust on entry. The web-thinned, tapered web design improves chip evacuation and cutting efficiency. At 3/32 inch (0.0938 inches) in diameter with a 3/4 inch flute length and a 1-3/4 inch overall length, the stubby screw machine profile offers increased rigidity and reduced deflection compared to jobber-length bits. Licensed machinists, tool-and-die techs, and HVAC fabrication shops are the primary users.

This drill bit is suited for production drilling, CNC setups, and manual drill press work where hole accuracy and bit stability are critical. The straight-cylindrical shank seats securely in standard chucks and collets. The primary rated workpiece material is titanium, making this bit appropriate for aerospace, HVAC sheet metal fabrication, and precision machining environments where hard or work-hardening materials are encountered. The 2.5xD flute-to-diameter ratio supports controlled chip clearance in short, blind, and through-hole applications.

Key Features

• 135-degree split point reduces drill walk and lowers entry thrust on hard materials
• Web-thinned, tapered web improves chip flow and reduces heat buildup
• Screw machine (stub) length provides superior rigidity and minimized deflection
• High speed steel construction with coated finish for extended tool life
• Right-hand spiral flute, straight-cylindrical shank fits standard chucks and collets
• Meets ANSI and NAS 907 standards for heavy duty drill bit performance

Compatibility

Designed as an OEM-style screw machine length drill bit rated for titanium and other high-strength workpiece materials, compatible with any standard chuck or collet accepting a straight-cylindrical shank at 3/32 inch diameter.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with drill press, CNC, or hand-drill operation. Ensure the drill press or machine spindle is fully stopped before changing or seating the bit in the chuck. Use appropriate cutting fluid or coolant for titanium and hard-material applications to manage heat, even though this bit does not feature through-coolant capability. Inspect the cutting edge and coating condition before each use and replace bits showing chipping or wear to maintain hole quality and avoid workpiece damage.