Precision Twist Drill 5999934 Taper Shank Drill Bit

Product Description

The PRECISION TWIST DRILL 5999934 is a taper shank drill bit designed for general-purpose metal drilling in industrial and trade applications. Built from high speed steel (HSS) with an oxide finish, this bit measures 0.5 inches in diameter and features a 118-degree standard point angle with web thinning for improved center penetration and reduced thrust. The 1MT (Morse Taper 1) shank seats directly into compatible drill press spindles or taper-shank tool holders without a separate chuck. Overall length is 7.75 inches with a spiral flute length of 4.375 inches. Right-hand cutting direction and regular spiral geometry make it well suited for a wide range of ferrous and non-ferrous materials.

This bit is intended for use in drill presses, lathes, and milling machines equipped with a No. 1 Morse Taper spindle. It is a general-purpose tool appropriate for machine shops, maintenance facilities, HVAC fabrication, plumbing rough-in work, and electrical panel fabrication where a 0.5-inch hole in metal or similar material is required. The Series S209 designation follows ANSI standards, making it a standard-compliant replacement or addition to existing tooling sets. Sold individually.

Key Features

• High speed steel construction for durability across general-purpose drilling tasks
• Oxide finish helps reduce friction and provides mild corrosion resistance
• 118-degree standard point with web thinning for improved center starting and reduced feed pressure
• No. 1 Morse Taper (1MT) shank for direct spindle mounting without a chuck
• Right-hand spiral flute with 4xD flute-to-diameter ratio for efficient chip evacuation
• ANSI-compliant Series S209 construction

Compatibility

Designed for use in drill presses, lathes, and milling machines with a No. 1 Morse Taper (1MT) spindle or tool holder. Suitable for general-purpose drilling in ferrous and non-ferrous materials.

Installation Notes

Installation is performed by machinists or skilled tradespeople using appropriate machine tooling. Before mounting, power down and lock out the machine per OSHA lockout/tagout procedures. Seat the 1MT shank fully into the spindle taper and verify positive engagement before operation. Do not use this bit in a standard keyed or keyless drill chuck not rated for taper shank tooling.