Precision Twist Drill 5999227 Screw Machine Drill Bit

Product Description

The PRECISION TWIST DRILL 5999227 is a screw machine length drill bit designed for high-performance drilling in a wide range of materials, including titanium, steel, and general-purpose metals. Built from high speed steel (HSS) with a bright/uncoated finish, this bit features a standard 118-degree point angle, a right-hand spiral flute, and a straight-cylindrical shank. The shortened screw machine length body provides added rigidity and reduced deflection compared to jobber-length bits, making it a reliable choice for production drilling and precision work in confined or fixtured setups. At 0.1065 inches in diameter (Wire Size 36), it is suited to applications requiring fine hole tolerances.

This bit is used in screw machine operations, CNC drilling centers, drill presses, and hand-held power tools where a stubby, rigid bit improves accuracy. The 2.5xD flute-to-diameter ratio and web-thinned, tapered web construction reduce cutting resistance and improve chip evacuation. It is appropriate for machinists, fabricators, and maintenance technicians working with ferrous and non-ferrous metals. The ANSI-standard geometry ensures dimensional consistency across production runs. Sold individually; minimum order quantity is 12 units.

Key Features

• Wire Size 36 diameter: 0.1065 inches for precise small-hole drilling
• High speed steel construction rated for general-purpose and high-performance applications
• 118-degree standard point angle for broad material compatibility
• Web-thinned, tapered web reduces thrust and improves chip flow
• Screw machine length body (1-13/16 inches overall) delivers rigidity and reduced deflection
• Right-hand spiral flute with bright/uncoated finish; no coolant-through required
• Meets ANSI standards for dimensional accuracy and interchangeability

Compatibility

Designed as a screw machine length replacement or production-use drill bit conforming to ANSI standards, compatible with any straight-shank drill chuck accepting a 0.1065-inch diameter bit. Listed primary workpiece material is titanium; suitable for general-purpose metal drilling per Series R41 specifications.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance technicians familiar with drilling speeds and feeds for the target material. Secure the bit fully in the chuck and verify runout before starting the cut. Always follow applicable machine guarding requirements and wear appropriate eye protection. Do not exceed the recommended surface footage for high speed steel tooling in the workpiece material being drilled.