Precision Twist Drill 5997242 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5997242 is a taper length, high-speed steel drill bit engineered for demanding metal-cutting applications. Sized at wire gauge 37 (0.1040 inches decimal), it features a 135-degree split point that reduces walking and self-centers on contact without a pilot hole. The parabolic flute geometry — running 2.5 inches in length across a 4.625-inch overall length — accelerates chip evacuation and reduces heat buildup during deep-hole drilling. The bright, uncoated finish makes wear easy to inspect. This bit is suited for machinists, maintenance technicians, and metalworking tradespeople who need consistent, accurate holes in a wide range of base metals.

The 5997242 is designed for general-purpose drilling in production and job-site environments. Its heavy-duty grade and web-thinned, tapered web construction make it effective in materials ranging from aluminum and brass to stainless steel, cast iron, hardened steel, and titanium alloys. The straight cylindrical shank fits standard drill chucks and compatible quick-change systems. The 6xD flute-to-diameter ratio supports extended reach without sacrificing rigidity, making it a practical choice for through-holes in plate stock, structural steel, and machined components.

Key Features

• Wire gauge 37 — 0.1040 inches decimal diameter for precise, close-tolerance hole sizing
• 135-degree split point with web thinning for self-centering entry and reduced thrust
• Parabolic flute design promotes fast chip clearance and lower cutting temperatures
• High-speed steel construction with bright, uncoated finish for easy wear inspection
• Straight cylindrical shank at 0.1040 inches for standard drill chuck compatibility
• ANSI-standard construction; heavy-duty grade rated for a broad material application range

Compatibility

Rated for use in 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. Straight cylindrical shank fits standard drill chucks.

Installation Notes

Installation and use should be performed by qualified machinists or tradespeople familiar with drilling equipment and safe cutting practices. Secure the workpiece firmly before drilling and verify chuck grip on the straight shank before operation. Use appropriate cutting fluid or coolant for the material being drilled to extend tool life, particularly in stainless steel or hardened materials. Inspect the cutting edges and web before each use and replace the bit if chipping or excessive wear is observed.