Precision Twist Drill 6000774 Taper Shank Drill Bit 3MT

Product Description

The PRECISION TWIST DRILL 6000774 is a taper shank drill bit designed for heavy-duty drilling in metal, steel, and other hard materials. It measures 0.6563 inches (21/32 inches) in diameter with a 9.75-inch overall length and a 5.125-inch spiral flute. The bit features a 135-degree notched point with web thinning for fast, self-centering starts and reduced thrust. A gold oxide finish provides light lubrication and heat resistance during cutting. The 3MT (Morse Taper 3) shank seats directly into compatible drill press spindles or lathe tailstocks, making this a tool for machinists, metalworkers, and maintenance trades requiring precise, large-diameter hole production.

This bit is used in machine shop, production, and maintenance environments where a drill press, milling machine, or lathe with a No. 3 Morse Taper spindle is in use. It is suited for drilling through mild steel, cast iron, aluminum, and similar materials in both job shop and industrial maintenance applications. The high-speed steel construction handles intermittent cutting cycles and moderate heat buildup without chipping. Series 209CO designation places it in a high-performance HSS line built to ANSI standards.

Key Features

• 135-degree notched point with web thinning reduces thrust and improves self-centering on flat or curved stock
• High-speed steel construction maintains cutting edge integrity through repeated use on ferrous and non-ferrous materials
• Gold oxide finish provides light lubrication and mild corrosion resistance
• 3MT taper shank seats securely in No. 3 Morse Taper spindles without a separate chuck
• Regular right-hand spiral flute efficiently evacuates chips during through-hole drilling
• Built to ANSI standards for dimensional consistency and interchangeability

Compatibility

Designed for use in drill presses, milling machines, or lathe tailstocks fitted with a No. 3 Morse Taper (3MT) spindle socket.

Installation Notes

Installation is performed by machinists or maintenance technicians familiar with Morse Taper tooling. Before inserting or removing the bit, ensure the machine is fully powered down and the spindle has stopped. Clean both the taper shank and the spindle socket of chips and oil before seating to ensure full contact and prevent slippage. A drift punch and mallet are the standard tools for ejecting a seated Morse Taper shank from the spindle.