Precision Twist Drill 5999833 Extra Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999833 is a high speed steel extra length drill bit designed for deep-hole drilling in a wide range of materials. At 0.5313 inches in diameter with a 15-inch overall length and an 11-inch spiral flute, it reaches depths that standard-length bits cannot. The 118-degree standard point angle and web-thinned tip reduce entry force and help keep the bit on center at the start of the cut. The bright, uncoated finish is the baseline choice when cutting fluids or coatings are not required. This bit is sold individually and suits machinists, maintenance technicians, and fabricators who need reliable material removal in extended-reach applications.

The 5999833 is built for drilling aluminum, magnesium, copper, nickel, titanium, and synthetic materials as primary workpiece targets. It also handles secondary materials including stainless steel, malleable iron, nickel alloys, high strength bronze, hardened steel, reinforced plastics, and magnesium alloys. The straight-cylindrical shank at 0.5313 inches diameter and 4 inches in length fits standard drill chucks without an adapter. The right-hand, regular spiral with a tapered web configuration suits general purpose production and maintenance drilling where flute-to-diameter ratio matters - this bit runs at 15xD.

Key Features

• 0.5313 inch diameter with matching straight-cylindrical shank for direct chuck mounting
• 15-inch overall length and 11-inch flute length for deep-hole reach
• 118-degree standard point angle with web-thinned, tapered web for reduced entry force
• High speed steel construction - bright, uncoated finish suitable for use with cutting fluid
• Right-hand, regular spiral with 2 flutes for efficient chip evacuation
• Meets ANSI standards; Series 1511 general purpose grade

Compatibility

Designed as a general purpose extra length drill bit compatible with primary workpiece materials including aluminum, magnesium, copper, nickel, titanium, and synthetic materials, as well as secondary materials such as stainless steel, hardened steel, malleable iron, nickel alloys, high strength bronze, reinforced plastics, and magnesium alloys.

Installation Notes

Install and operate this bit using a drill press, milling machine, or powered hand drill with a chuck rated for a 0.5313-inch straight shank. Secure the shank fully in the chuck and verify concentricity before drilling to prevent deflection at extended lengths. Always wear appropriate eye protection and secure the workpiece before engaging the spindle. Apply cutting fluid when drilling ferrous or hard alloy materials to extend tool life and manage heat.