Precision Twist Drill 5998882 Jobber Drill Bit Letter N Hss

Product Description

The PRECISION TWIST DRILL 5998882 is a jobber-length drill bit sized to Letter N (0.3020 inches) for general-purpose drilling in metal and hard materials. Built from high-speed steel with a bright uncoated finish, it features a standard 118-degree split-point angle and a two-flute regular spiral design with a tapered web configuration. The web-thinned geometry reduces thrust and helps the bit start cleanly without walking. At 4.375 inches overall length with a 3.0625-inch flute length, it fits standard drill chucks via its straight-cylindrical shank. Licensed trades and industrial machinists rely on this series for consistent performance across a wide range of workpiece materials.

The 5998882 is rated for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials, covering primary workpiece material codes P, M, K, N, and S. It is suited to production drilling, maintenance-and-repair work, and fabrication shops where a reliable general-purpose bit in a less-common letter size is needed. The 10xD flute-by-diameter ratio provides adequate chip evacuation for standard depth holes without coolant-through capability. This bit ships individually and is designed for use in standard drill presses, hand drills, and CNC drilling operations where straight-shank tooling is accepted.

Key Features

• Letter N size at 0.3020 inches decimal equivalent for precise hole sizing
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High-speed steel construction handles steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Two-flute regular spiral design with 3.0625-inch flute length for efficient chip removal
• Straight-cylindrical shank at 0.3020 inches diameter fits standard drill chucks
• Bright uncoated finish; no coolant-through required for general-purpose applications
• Conforms to ANSI standards; part of the R10P-R15P-R18P series

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill press, hand drill, or CNC machine accepting a straight-cylindrical shank. Part of the PRECISION TWIST DRILL R10P-R15P-R18P series.

Installation Notes

Installation is performed by machinists, maintenance technicians, or fabricators using standard drill chucks rated for the shank diameter. Secure the shank fully in the chuck and verify concentricity before drilling. Always power down and lock out the machine before changing tooling. Do not exceed the recommended drilling depth of 3.0625 inches for this bit length, and use cutting fluid as appropriate for the workpiece material to extend tool life.