Precision Twist Drill 5998245 No 25 Hss Jobber Drill Bit

Product Description

The PRECISION TWIST DRILL 5998245 is a jobber-length twist drill bit sized to No. 25 wire gauge, equivalent to 0.1495 inches in diameter. Built from high-speed steel with a bright uncoated finish, this bit is designed for general-purpose drilling in metalworking and fabrication environments. It features a standard 118-degree split-point angle, a 2-flute regular spiral configuration, and a web-thinned, tapered web design that reduces entry force and improves chip evacuation. The straight cylindrical shank seats securely in standard keyed or keyless chucks. At 3 inches overall length, it fits compact and full-size drill presses, hand drills, and CNC setups. This is a single-piece unit conforming to ANSI standards and intended for use by machinists, tool-and-die tradespeople, and general fabrication shops.

This bit is suited for drilling steel, cast iron, non-ferrous metals, superalloys, and titanium in both production and maintenance-repair-operations settings. Its 1-7/8-inch flute length allows a maximum drilling depth of 1.875 inches, making it appropriate for through-hole and moderate blind-hole applications in thin to medium stock. The Series R10H-R18H designation places it within a standard jobber-length family used across a wide range of manual and machine-tool operations in light and heavy industrial environments.

Key Features

• No. 25 wire size — 0.1495-inch diameter for precision-fit hole requirements
• High-speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• 2-flute regular spiral design promotes efficient chip removal during drilling
• 1-7/8-inch flute length supports a maximum drilling depth of 1.875 inches
• Straight cylindrical shank — 0.1495-inch shank diameter — compatible with standard chucks
• ANSI-conformant jobber-length geometry for consistent interchangeability

Compatibility

Designed as a general-purpose jobber-length replacement drill bit for use in standard keyed and keyless drill chucks accepting straight cylindrical shanks in the 0.1495-inch diameter range. Compatible with drill presses, CNC machining centers, and hand-held power drills configured for wire-gauge tooling.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with rotating tool safety practices. Ensure the drill chuck is fully tightened and the workpiece is securely clamped or fixtured before beginning any drilling operation. This bit does not support coolant-through delivery — apply cutting fluid externally when drilling steel, cast iron, or superalloys to extend tool life and manage heat. Inspect the cutting edges for wear or chipping before each use and replace if the point is damaged.