Precision Twist Drill 5999449 Screw Machine Drill Bit 7/32

Product Description

The PRECISION TWIST DRILL 5999449 is a screw machine length drill bit designed for high-performance drilling in demanding trade and industrial applications. Built from high speed steel with a coated finish, this bit features a 135-degree split point and web-thinned, tapered web construction that reduces walking and cutting resistance at the start of the hole. The straight-cylindrical shank measures 7/32 inch (0.2188 inches) in diameter, with an overall length of 2-3/8 inches and a flute length of 1-1/4 inches. The right-hand spiral flute configuration promotes efficient chip evacuation during operation. Licensed machinists, maintenance technicians, and tool-room professionals rely on this bit for precise, clean holes in a range of materials.

This drill bit is rated for primary use in titanium workpieces and is well suited to applications where a stubby, rigid tool profile is required to minimize deflection. The screw machine length — shorter than jobber length — makes it a practical choice for drill press work, CNC setups, and hand-held power tool use in tight or confined spaces. The R40C series is built to ANSI and NAS 907 standards, positioning it for use in aerospace, manufacturing, and general metalworking environments where specification compliance is required.

Key Features

• 135-degree split point with web thinning reduces thrust and eliminates center punch requirement on most metals
• High speed steel construction with coated finish extends tool life in abrasive and hard materials including titanium
• Screw machine (stub) length provides added rigidity and reduced deflection compared to jobber-length bits
• Right-hand spiral flute promotes efficient chip removal during through-hole and blind-hole drilling
• Straight-cylindrical shank fits standard drill chucks without special tooling
• Meets ANSI and NAS 907 specifications for use in regulated manufacturing and aerospace applications

Compatibility

Designed as an OEM-specification replacement and general-use drill bit for standard drill chucks accepting a straight-cylindrical shank; compatible with drill presses, CNC drilling machines, and hand-held power drills used in metalworking and fabrication operations.

Installation Notes

Secure the shank fully in the drill chuck and verify concentricity before operating. Apply cutting fluid or coolant appropriate for the workpiece material, particularly when drilling titanium or hardened alloys, to manage heat buildup and extend tool life. Operate at feeds and speeds appropriate for high speed steel tooling in the selected material. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.