Precision Twist Drill 5999241 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999241 is a screw machine length drill bit designed for high-speed, high-accuracy drilling in metal fabrication and machining applications. Built from high speed steel (HSS) with a bright/uncoated finish, this bit measures 0.081 inches in diameter with an overall length of 1.75 inches and a flute length of 0.75 inches. The 118-degree standard point angle and web-thinned, tapered web construction reduce thrust and improve chip evacuation. It meets ANSI standards and is rated for general-purpose use with high-performance tool geometry. Machinists, tool-and-die technicians, and precision fabricators are the primary installers.

This drill bit is suited for screw machine operations, CNC drilling, and bench drill press work where short overall length and rigid support are required. The R41 series screw machine length format reduces deflection in close-tolerance work and tight-clearance fixtures. Per the supplier data, this bit is rated for use in titanium as a primary workpiece material, making it appropriate for aerospace, industrial, and precision metalworking environments where hard-material drilling is routine. The 2.5xD flute-to-diameter ratio supports chip clearance in short, high-feed drilling cycles.

Key Features

• 0.081 inch (#46 wire gauge) diameter with 118-degree standard point angle
• Web-thinned, tapered web construction reduces entry thrust and improves chip flow
• High speed steel construction with bright/uncoated finish for general-purpose metalworking
• Screw machine length format (1.75 inches overall) provides rigidity and minimizes deflection
• Right-hand cut, spiral flute design with 2.5xD flute-to-diameter ratio
• Meets ANSI standards; Series R41 designation

Compatibility

Designed as an OEM-style replacement or direct-use drill bit for screw machine, CNC, and bench drill press operations requiring a #46 wire gauge, 0.081 inch diameter high speed steel bit in screw machine length format.

Installation Notes

Installation is performed by machinists or toolroom technicians. Secure the straight-cylindrical shank fully in the drill chuck or collet before use to prevent runout. Ensure the spindle is fully stopped and machine power is off before changing bits. Do not exceed the recommended feed and speed parameters for the workpiece material, and use appropriate cutting fluid when drilling hard metals such as titanium.