Precision Twist Drill 6000080 Reduced Shank Drill Bit

Product Description

The PRECISION TWIST DRILL 6000080 is a reduced shank twist drill bit designed for general-purpose drilling in metal fabrication and machining applications. It features a 37/64 inch (0.5781 inch decimal) drill diameter paired with a 1/2 inch Weldon flat shank, allowing it to seat securely in milling-style chucks and side-lock holders without slipping under torque. The bit is manufactured from high-speed steel (HSS) with a bright, uncoated finish and ground to a standard 118-degree point angle for reliable starting and clean entry on a wide range of ferrous and non-ferrous workpieces. This is a right-hand cutting, spiral-flute bit suitable for use on drill presses, milling machines, and CNC machining centers.

The 6000080 is rated for general-purpose performance across ferrous metals as the primary workpiece material, and is also suitable for aluminum, copper, magnesium, nickel, titanium, synthetic materials, and cermet. The 3-inch flute length supports a maximum drilling depth of 3 inches, and the 6-inch overall length provides clearance for most standard setups. The Series R57 designation places it within PRECISION TWIST DRILL's line of reduced shank general-purpose bits, typically used by machinists, tool and die shops, and maintenance mechanics where a larger drill diameter is needed with a standardized 1/2 inch shank interface.

Key Features

• 37/64 inch drill diameter (0.5781 inch decimal) with a reduced 1/2 inch Weldon flat shank for compatibility with side-lock toolholders
• High-speed steel construction for durability across ferrous and non-ferrous materials
• 118-degree standard point angle for general-purpose entry and centering
• 3-flute Weldon shank design prevents bit rotation under heavy drilling loads
• Bright, uncoated finish — suitable for use with or without coolant on compatible machines
• Right-hand spiral flute with regular helix for efficient chip evacuation
• ANSI standard compliance for dimensional consistency

Compatibility

Designed as a general-purpose reduced shank drill bit compatible with 1/2 inch side-lock (Weldon) toolholders and chucks commonly used on drill presses, knee mills, and CNC machining centers. Suited for ferrous metal, aluminum, copper, magnesium, nickel, titanium, synthetic, and cermet workpiece materials per Series R57 specifications.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tooling technicians. Always power down and lock out the machine before loading or changing bits. Seat the Weldon flat shank fully into the holder and tighten the set screw against the flat before running the spindle. Inspect the cutting edges for damage before each use, and do not exceed the bit's rated drilling depth of 3 inches per the flute length.