Precision Twist Drill 5998862 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5998862 is a screw machine length drill bit designed for high-performance drilling in metal and industrial materials. Built from high speed steel (HSS) with a bright uncoated finish, this bit features a 0.1285 inch diameter, a 118-degree standard point angle, and a right-hand spiral flute for efficient chip evacuation. The web-thinned, tapered web configuration reduces thrust and improves penetration in harder materials. It is sold individually and is part of the Series R41 lineup engineered for general-purpose and high-performance applications.

This screw machine length drill bit is suited for production and maintenance drilling operations where a shorter overall length provides better rigidity and reduced deflection. The 0.1285 inch diameter corresponds to wire gauge size number 30, making it a common choice for tap drilling, clearance holes, and precision work in metals including titanium and general ferrous and non-ferrous stock. Its straight-cylindrical shank fits standard three-jaw drill chucks on bench drills, drill presses, and CNC machining centers.

Key Features

• 0.1285 inch diameter, wire gauge size number 30
• 118-degree standard point angle for general-purpose drilling
• High speed steel construction with bright uncoated finish
• Web-thinned tapered web reduces thrust in harder materials
• Screw machine length provides increased rigidity over jobber-length bits
• Right-hand cut with regular spiral flute for efficient chip removal
• Meets ANSI standards

Compatibility

Designed as a general-purpose screw machine length drill bit compatible with standard three-jaw drill chucks and collet holders accepting straight-cylindrical shanks. Fits bench drills, drill presses, and CNC machining centers used in metalworking and maintenance applications.

Installation Notes

Install and remove this bit only with the machine fully powered down and the chuck key removed from the chuck. Secure the straight-cylindrical shank firmly in a properly sized three-jaw chuck before use. Observe applicable shop safety codes and manufacturer feed-and-speed recommendations for the workpiece material. Do not use on materials or at speeds outside the rated capability of the bit to avoid breakage.