Precision Twist Drill 5999750 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999750 is a taper length straight-shank drill bit designed for general-purpose drilling across a wide range of materials. Manufactured from high speed steel with a bright/uncoated finish, this bit features a 118-degree standard point angle and a web-thinned, tapered web configuration that reduces thrust and improves chip clearance at the drill point. The 0.1440-inch diameter corresponds to wire gauge size 27. With a 3-inch spiral flute length and a 6xD flute-to-diameter ratio, this bit delivers efficient chip evacuation during moderate-depth drilling operations. It is installed by machinists, maintenance technicians, and trade professionals working with drill presses, CNC equipment, or hand-held power tools.

This drill bit is suited for use in both light production and maintenance-repair environments where a general-purpose bit is required. The right-hand cut spiral flute and straight shank allow it to seat directly in standard chucks without adapters. It performs across a broad spectrum of workpiece materials including alloy steel, carbon steel, stainless steel, cast iron, aluminum, brass, bronze, copper, magnesium, nickel alloys, and reinforced plastics. The taper length body provides additional reach compared to a jobber-length bit, making it useful where standard-length bits fall short.

Key Features

• High speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust
• 3-inch spiral flute length at a 6xD ratio for efficient chip removal
• Bright/uncoated finish compatible with cutting fluids and coolants
• Straight shank seats in standard drill chucks without adapters
• Meets ANSI standards for general-purpose drill bit geometry

Compatibility

Designed as a general-purpose taper length drill bit suitable for use in standard drill chucks on drill presses, CNC machines, and power hand tools requiring a straight-shank bit in the 0.1440-inch (wire gauge 27) diameter.

Installation Notes

Secure the straight shank fully in the chuck and verify runout before beginning a cut. Always power down and de-energize the machine before changing bits. Apply appropriate cutting fluid or coolant for the workpiece material, particularly when drilling stainless steel or hardened alloys, to extend bit life and maintain dimensional accuracy. Follow applicable shop safety standards and equipment manufacturer guidelines for spindle speed selection based on material and bit diameter.