Precision Twist Drill 5999718 Taper Length Drill Bit 19/64

Product Description

The PRECISION TWIST DRILL 5999718 is a taper length drill bit designed for general-purpose drilling in a wide range of materials. Built from high speed steel with a bright/uncoated finish, this bit features a 118-degree standard point angle and a spiral, right-hand cut flute geometry. The straight shank measures 0.2969 inches in diameter, and the 4-inch flute length provides extended reach compared to a jobber-length bit. Web thinning reduces thrust and improves chip evacuation in tougher materials. This bit is appropriate for machinists, maintenance technicians, and fabricators working across metal and non-metal substrates.

This taper length drill bit is suited for production and maintenance drilling where added flute length is required to reach depth or clear chips in deep holes. Its 6xD flute-to-diameter ratio makes it effective in CNC drill presses, manual drill presses, and hand-held drilling applications. Compatible materials include carbon steel, alloy steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high strength bronze, copper, nickel, nickel alloy, magnesium, magnesium alloy, cermet, graphite, and reinforced plastic materials.

Key Features

• 19/64 inch (0.2969 inch) diameter with matching straight shank for standard chuck compatibility
• 118-degree standard point angle for general-purpose entry in a broad range of materials
• 4-inch flute length with 6xD flute-to-diameter ratio for extended reach and chip clearance
• High speed steel construction with bright/uncoated finish
• Web-thinned, tapered web configuration reduces cutting thrust
• Right-hand spiral flute, ANSI standard, Series R51

Compatibility

Designed as a general-purpose replacement or stocking taper length drill bit for use in standard straight-shank chucks on drill presses, CNC machines, and handheld drilling equipment requiring a 19/64 inch diameter bit.

Installation Notes

Secure the straight shank fully into a compatible drill chuck and verify concentricity before use. Always power down and lock out the machine before changing bits. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend bit life, noting this bit does not support coolant-through delivery. Follow applicable shop safety and machine operation standards for the equipment in use.