Precision Twist Drill 5999715 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999715 is a taper length drill bit designed for general-purpose drilling across a wide range of materials. Built from high speed steel (HSS) with a bright, uncoated finish, it measures 19/32 inch (0.5938 inches) in diameter with an overall length of 8.75 inches and a flute length of 4.875 inches. The standard 118-degree point angle and web-thinned, tapered web configuration reduce entry resistance and improve chip evacuation. This bit is installed by machinists, maintenance technicians, fabricators, and trade professionals working in metal fabrication, HVAC ductwork, and general mechanical service environments.

The 5999715 is suited for drilling into a broad spectrum of materials, including alloy steel, carbon steel, stainless steel, cast iron, malleable iron, aluminum, aluminum alloy, brass, bronze, high strength bronze, copper, nickel, nickel alloy, magnesium, magnesium alloy, hardened steel, cermet, graphite, and reinforced plastic materials. Its regular spiral flute geometry and 6xD flute-to-diameter ratio make it a practical choice for through-holes and deep-entry applications in both shop and field settings.

Key Features

• 19/32 inch (0.5938 inches) diameter with a straight, non-threaded shank at 0.5937 inches
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust and cleaner entry
• High speed steel construction for durability across a wide material range
• Bright/uncoated finish — suitable for general-purpose use without added coating cost
• Right-hand cut, regular spiral flute for efficient chip clearing
• Meets ANSI standards; Series R51 taper length classification

Compatibility

Designed as a general-purpose taper length drill bit compatible with standard drill presses, lathes, and hand-held drilling equipment that accept a straight shank at 0.5937 inches diameter.

Installation Notes

Secure the straight shank firmly in the chuck or collet before use and verify concentricity to avoid runout. Power down all equipment completely before changing or seating the bit. Use appropriate cutting fluid or coolant when drilling ferrous metals to extend tool life, noting that this bit does not support coolant-through delivery. Follow applicable shop safety codes and wear rated eye protection when operating.