Precision Twist Drill 5999751 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999751 is a taper length, high speed steel (HSS) drill bit designed for general-purpose drilling across a wide range of materials. It measures 0.9062 inches (29/32 inch) in diameter with a 10-inch overall length and a 6-1/8-inch spiral flute. The 118-degree standard point angle and web-thinned, tapered web geometry promote clean entry and reduced thrust. The bright/uncoated finish suits applications where coating is unnecessary or undesirable. This bit is sized for production and maintenance drilling where a longer reach than a jobber-length bit is required.

This taper length drill bit is suited for machine shop, fabrication, and maintenance environments. It installs in drill presses, lathes, milling machines, and compatible CNC equipment. The straight shank accommodates standard drill chucks. Material applications include alloy steel, carbon steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high strength bronze, copper, magnesium, magnesium alloy, nickel, nickel alloy, reinforced plastic materials, graphite, hardened steel, and cermet. The right-hand cutting direction and regular spiral type make it a standard selection for through-hole and blind-hole work in general purpose machining.

Key Features

• 0.9062 inch (29/32 inch) diameter with 10-inch overall length for extended reach
• 118-degree standard point angle with web-thinned, tapered web for reduced entry thrust
• High speed steel construction for durability across a broad material range
• Bright/uncoated finish compatible with a wide variety of cutting fluids and dry applications
• Straight shank fits standard drill chucks without additional adapters
• ANSI-standard Series R51 with 6xD flute-to-diameter ratio for chip clearance

Compatibility

Designed as a general-purpose taper length drill bit compatible with standard drill chucks accepting a 0.9063-inch straight shank, suitable for drill presses, lathes, milling machines, and CNC setups operating on the listed material types.

Installation Notes

Installation is performed by machinists and toolroom technicians using a standard keyed or keyless drill chuck rated for the shank diameter. Ensure the machine is fully de-energized and the spindle is locked before inserting or removing the bit. Secure the shank fully within the chuck jaws and verify runout before beginning a cut. Follow applicable shop safety standards and manufacturer feed-and-speed recommendations for the target material.