Precision Twist Drill 5999303 Wire 96 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5999303 is a jobber-length drill bit sized to wire gauge 96, equivalent to 0.0063 inches in decimal. Built from high-speed steel with a bright uncoated finish, it features a standard 118-degree point angle and a regular spiral flute with a right-hand cut. The straight-cylindrical shank measures 0.0063 inches in diameter and 0.6875 inches in length. Overall length is 0.75 inches with a usable flute length of 0.0625 inches. Machinists, tool-and-die technicians, and maintenance mechanics install this bit for precision small-diameter drilling in production and repair applications.

This bit is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium. Its general-purpose performance rating and ANSI-standard construction make it appropriate for light-duty production drilling, fixture work, and component fabrication in both shop and field settings where extremely small-diameter holes are required. The two-flute spiral design supports efficient chip evacuation in these demanding materials.

Key Features

• Wire gauge size 96 — 0.0063 inch decimal diameter for precision micro-drilling
• 118-degree standard point angle for general-purpose entry into a wide range of metals
• High-speed steel construction with bright uncoated finish
• Right-hand cut, two-flute regular spiral for consistent chip clearing
• Web-thinned tapered web for reduced thrust at entry
• ANSI-compliant straight-cylindrical shank for compatibility with standard collets and chucks

Compatibility

Designed for use in standard drill chucks and collet systems accepting a 0.0063-inch straight-cylindrical shank. Compatible workpiece materials include steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium as noted in the product specifications. No coolant-through capability; suited for dry or externally lubricated drilling operations.

Installation Notes

Installation and use should be performed by qualified machinists or tooling technicians familiar with micro-diameter drill bit handling. Secure the shank fully in a precision collet or drill chuck rated for this diameter before operation to prevent bit deflection or breakage. At this size, bits are fragile — avoid side loading, excessive feed pressure, or use in worn spindles with runout. Follow applicable shop safety practices and machine manufacturer guidelines when setting spindle speed and feed rate.