Precision Twist Drill 5997159 Taper Length Drill Bit 50

Product Description

The PRECISION TWIST DRILL 5997159 is a taper length drill bit designed for precision hole-making in metalworking and industrial applications. Built from high speed steel with a bright/uncoated finish, it features a 135-degree split point that reduces walking and requires no center punch on most surfaces. The parabolic flute geometry accelerates chip evacuation and allows deeper cuts with less feed force. At wire size 50 (0.0700 inches decimal), this bit suits fine-diameter drilling tasks where accuracy and clean entry are critical. Machinists, tool-and-die technicians, and maintenance professionals are the primary users.

This drill bit is suited for drilling alloy steel, carbon steel, stainless steel, cast iron, aluminum, aluminum alloy, brass, bronze, copper, magnesium, magnesium alloy, malleable iron, nickel, tempered steel, hardened steel, titanium, titanium alloy, and graphite. Its parabolic flute and web-thinned construction make it effective in both general-purpose production drilling and self-centering applications where hole placement tolerance is tight. Straight shank design fits standard drill chucks without adapters.

Key Features

• 135-degree split point reduces thrust and eliminates center-punch requirements on most workpieces
• Parabolic flute geometry improves chip flow and reduces heat buildup during deep cuts
• Web-thinned, tapered web configuration lowers cutting resistance for heavy-duty use
• High speed steel construction provides hardness and toughness across a broad range of workpiece materials
• Straight shank fits standard Jacobs-style and keyless drill chucks without a reducer
• ANSI-standard geometry ensures dimensional consistency and interchangeability

Compatibility

Designed as an OEM-style taper length drill bit compatible with standard straight-shank drill chucks in bench drills, drill presses, CNC machining centers, and handheld power drills. Suitable for use across the material applications listed in the Technical Specifications below.

Installation Notes

Install in a properly sized drill chuck and tighten securely before operation. Ensure the workpiece is clamped or fixtured to prevent movement during drilling. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend tool life, even though this bit does not have through-coolant capability. Follow applicable machine shop safety practices and disconnect power before changing bits in any stationary equipment.