Chicago-latrobe 50328 Taper Length Drill Bit 0.1015 in

Product Description

The CHICAGO-LATROBE 50328 is a taper length, straight-shank twist drill bit designed for general-purpose hole-making in metal substrates. Manufactured from high speed steel (HSS) with a coated finish, this bit measures 0.1015 inches in diameter - corresponding to Wire Gauge size 38 - and carries a standard 118-degree split-point angle. The taper length body provides added rigidity and reach compared to jobber-length bits, making it well suited for production drilling and machine-shop applications where hole depth and straightness are critical. The right-hand spiral flute geometry clears chips efficiently during the cut.

This drill bit is intended for use in metal-cutting applications involving alloy steel, carbon steel, and cast iron. It is compatible with standard drill presses, CNC machining centers, and hand-held drilling equipment capable of accepting a straight shank. The overall length of 4.625 inches and flute length of 2.5 inches accommodate medium-depth through-holes in plate stock, weldments, and fabricated assemblies. Machinists, tool-and-die workers, and metal fabricators working in production or maintenance settings are the primary users of this size and series.

Key Features

• 0.1015-inch diameter with a tight tolerance of +0.0000 to -0.0005 inches for precise hole sizing
• High speed steel construction provides hardness and wear resistance across common ferrous metals
• 118-degree standard point angle suits general-purpose drilling in alloy steel, carbon steel, and cast iron
• Coated finish reduces friction and extends tool life during repeated use
• Web-thinned, tapered web design reduces thrust force and improves point stability at entry
• Right-hand spiral flute promotes efficient chip evacuation in through-hole and blind-hole drilling

Compatibility

Designed for use in alloy steel, carbon steel, and cast iron applications. Fits standard straight-shank drill chucks. This is a Series 120 general-purpose taper length bit.

Installation Notes

A licensed machinist or experienced metalworker should select appropriate spindle speed and feed rate based on workpiece material and machine capability before use. Secure the workpiece fully before drilling to prevent movement during the cut. Use cutting fluid or coolant appropriate to the workpiece material to extend bit life and improve hole finish. Inspect the cutting edges before each use and replace the bit if chipping or excessive wear is observed.