Precision Twist Drill 5999519 Taper Length Drill Bit

Product Description

The PRECISION TWIST DRILL 5999519 is a taper length drill bit designed for precision drilling in a wide range of materials. Built from high speed steel with a bright uncoated finish, it measures 0.0225 inches in diameter, corresponding to wire gauge size 74. The 118-degree standard point angle delivers consistent entry and clean holes across both ferrous and non-ferrous workpieces. The spiral flute geometry with a 6xD flute-to-diameter ratio promotes efficient chip evacuation during operation. With a straight shank and an overall length of 1.5 inches, this bit fits standard drill chucks without adapters. It is installed and used by machinists, tool and die workers, and trade professionals requiring small-diameter precision drilling.

This drill bit is suited for general-purpose applications across 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, magnesium, magnesium alloy, nickel, nickel alloy, cermet, graphite, and reinforced plastic materials. It is appropriate for light production and maintenance drilling in shop, field, and manufacturing environments. The taper length body provides added rigidity compared to jobber-length bits of the same diameter, making it a preferred choice when drilling deep or narrow-clearance holes.

Key Features

• 0.0225 inch diameter, wire gauge size 74, for small-diameter precision work
• 118-degree standard point angle with web-thinned, tapered web configuration
• High speed steel construction for durability across ferrous and non-ferrous materials
• Spiral flute with 6xD ratio for effective chip removal during drilling
• Straight shank with 0.0225 inch shank diameter for standard chuck compatibility
• Bright uncoated finish; right-hand cut; general-purpose grade; ANSI compliant

Compatibility

Designed as an OEM-style general-purpose taper length drill bit in the R52 series, compatible with standard straight-shank drill chucks accepting 0.0225 inch shank diameters. Suitable for use on drill presses, CNC machines, and hand drills capable of holding small-diameter straight-shank tooling.

Installation Notes

This bit is typically installed by machinists or qualified tradespeople using a drill press, milling machine, or hand drill equipped with an appropriate precision chuck. Ensure the workpiece is securely clamped before drilling. Use appropriate cutting fluid or coolant for ferrous materials to extend tool life, noting this bit does not support coolant-through delivery. Replace the bit at first signs of dulling to maintain hole quality and avoid bit breakage at this small diameter.