Precision Twist Drill 5999057 Jobber Drill Bit Size 40

Product Description

The PRECISION TWIST DRILL 5999057 is a wire-gauge size 40 jobber-length drill bit manufactured from high speed steel (HSS) with a bright, uncoated finish. It measures 2.375 inches in overall length with a 1.375-inch spiral flute and a straight-cylindrical shank diameter of 0.0980 inches. The 118-degree standard point angle and web-thinned, tapered web geometry deliver clean entry and efficient chip evacuation. Two right-hand spiral flutes with a regular spiral type provide consistent cutting performance across a broad range of materials. This bit is a general-purpose tool installed by machinists, maintenance technicians, HVAC and plumbing trades, and field service professionals requiring small-diameter precision drilling.

The 5999057 is suited for drilling steel, stainless steel, cast iron, non-ferrous metals, superalloys, titanium, and other hard materials. At a flute-to-diameter ratio of 14xD and a maximum drilling depth of 1.375 inches, it handles through-hole and blind-hole applications in light production and maintenance environments. The straight-cylindrical shank seats directly in standard drill chucks without adapters. This bit ships individually and is part of the R10P-R15P-R18P series, providing consistent dimensional tolerances across the series lineup.

Key Features

• Wire size 40 decimal equivalent: 0.0980 inches diameter
• 118-degree standard point angle with web-thinned, tapered web for clean entry
• High speed steel construction for use on steel, stainless steel, cast iron, non-ferrous metals, superalloys, and titanium
• Right-hand cut, regular spiral flute for efficient chip removal
• Bright uncoated finish; no coolant-through requirement
• Meets ANSI standards; part of the R10P-R15P-R18P series

Compatibility

Designed as a general-purpose jobber-length drill bit compatible with any standard drill chuck accepting a 0.0980-inch straight-cylindrical shank. Suitable for use in handheld drills, drill presses, and CNC drilling applications requiring wire-gauge size 40 tooling.

Installation Notes

Secure the shank fully in the drill chuck and verify concentricity before operation. Use appropriate cutting fluid or dry-cutting technique based on workpiece material; coolant-through is not supported on this bit. Inspect the cutting edges for wear or chipping before each use, particularly when drilling hard materials such as stainless steel or superalloys. Follow applicable shop safety standards and machine guarding requirements during use.