Precision Twist Drill 5999729 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999729 is a taper length high speed steel drill bit designed for general-purpose drilling across a wide range of materials. It features a 23/32 inch (0.7188 inch) diameter with a 118-degree standard point angle and a bright, uncoated finish. The spiral flute geometry, combined with a web-thinned and tapered web configuration, promotes efficient chip evacuation and reduces entry resistance. The straight shank and right-hand cut make it compatible with standard drill chucks. This bit is suited for use by machinists, maintenance technicians, and trade professionals working in fabrication, mechanical, or industrial service environments.

This drill bit is rated for use in alloy steel, aluminum, aluminum alloy, brass, bronze, carbon steel, cast iron, copper, graphite, hardened steel, high strength bronze, magnesium, magnesium alloy, malleable iron, nickel, nickel alloy, reinforced plastic materials, and stainless steel. The taper length body, with a flute-to-diameter ratio of 6xD and a flute length of 5.625 inches, provides additional reach compared to jobber-length bits. It is suited for applications where standard jobber length is insufficient but full extra-length reach is not required.

Key Features

• 23/32 inch (0.7188 inch) diameter straight shank, no threading
• 118-degree standard point angle with web-thinned, tapered web for reduced thrust
• High speed steel construction rated for ferrous and non-ferrous materials
• Bright, uncoated finish suitable for general-purpose drilling without coolant
• Spiral flute with 6xD flute-to-diameter ratio for extended reach
• Right-hand cut, ANSI standard compliant, Series R51

Compatibility

Designed as a general-purpose taper length drill bit compatible with standard drill chucks and drill presses accepting a 0.7188 inch straight shank. Suitable for drilling alloy steel, aluminum, brass, bronze, carbon steel, cast iron, copper, stainless steel, and a broad range of other ferrous and non-ferrous materials as listed by the manufacturer.

Installation Notes

Secure the shank fully in a compatible drill chuck before operation and verify chuck capacity accommodates a 0.7188 inch straight shank. Power down and de-energize all equipment before changing bits. Follow applicable ANSI safety standards and shop safety protocols when operating drill presses or hand-held drilling equipment. Coolant through is not supported on this bit; use external cutting fluid when drilling hardened or heat-sensitive materials.