Precision Twist Drill 5997240 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5997240 is a taper length drill bit in the QC91P series, designed for general-purpose drilling in a wide range of metals and alloys. It is a No. 36 wire gauge size, corresponding to 0.1065 inches in diameter. The bit features a 135-degree split point for self-centering starts without a center punch, and a parabolic flute geometry for efficient chip evacuation and reduced heat buildup. The shank diameter matches the drill diameter at 0.1065 inches, fitting standard drill chucks. Machinist and maintenance technicians working with production or jobsite drilling equipment are the typical users for this bit.

This bit is suited for drilling into alloy steel, carbon steel, stainless steel, hardened steel, tempered steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, copper, magnesium, magnesium alloy, nickel, titanium, titanium alloy, and graphite. Its taper length body and parabolic flute design make it appropriate for deeper hole applications where a standard jobber-length bit would struggle to clear chips. It fits production drilling, maintenance repair, and precision fabrication scenarios in shop or field environments.

Key Features

• No. 36 wire size — 0.1065 inches diameter for precision small-diameter drilling
• 135-degree split point for self-centering entry without a pilot punch
• Parabolic flute geometry promotes fast chip removal and reduced heat in deep holes
• Taper length body — 2.5 inches of flute length in a 4.625-inch overall length for extended reach
• High-speed steel construction with bright/uncoated finish for general-purpose metal drilling
• Web-thinned, tapered web configuration reduces thrust and improves cutting efficiency
• Right-hand cut, straight shank — compatible with standard drill chucks

Compatibility

Designed for use in standard drill chucks accepting a straight shank at 0.1065 inches diameter. Suitable for drilling the following materials per manufacturer specification: alloy steel, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, copper, graphite, hardened steel, magnesium, magnesium alloy, malleable iron, nickel, stainless steel, steel, tempered steel, titanium, and titanium alloy.

Installation Notes

Installation and use of this drill bit is performed by machinists, maintenance technicians, or qualified tradespeople using standard drill press, hand drill, or CNC drilling equipment. Secure the straight shank firmly in the chuck and verify concentricity before drilling. Power down and de-energize all equipment before changing bits. Do not exceed the drill bit's rated material hardness range; use appropriate cutting fluid when drilling ferrous metals to extend tool life and maintain hole quality.