Value Collection 1057586 Taper Shank Drill Bit 7/8 in 3MT

Product Description

The VALUE COLLECTION 1057586 is a cobalt taper shank drill bit designed for general-purpose drilling in metal and hard materials. It features a 7/8 inch cutting diameter and a No. 3 Morse Taper (3MT) shank for secure seating in compatible spindles and drill presses. The 118-degree standard point angle suits a wide range of ferrous and non-ferrous materials. With a bright, uncoated finish and N-thinned web, this bit reduces entry force and chip packing. Cobalt construction provides increased heat resistance compared to standard high-speed steel, making it suitable for tougher alloys and production drilling environments. Licensed machinists and tool-room professionals are the primary installers and users of this bit.

This drill bit is suited for use in vertical knee mills, drill presses, and CNC machining centers equipped with a No. 3 Morse Taper spindle or sleeve. It is appropriate for drilling through mild steel, stainless steel, cast iron, and similar hard materials in both job-shop and production settings. The regular spiral flute and right-hand cutting direction make it a standard workhorse for through-hole drilling operations where consistent performance and heat resistance are required. Coolant-through capability allows for extended run times in high-production applications.

Key Features

• 7/8 inch (0.8750 inch) cutting diameter for precise, consistent hole sizing
• No. 3 Morse Taper (3MT) shank for positive, self-holding fit in compatible spindles
• Cobalt tool material for improved heat resistance and durability in hard metals
• 118-degree standard point angle with N-thinned web to reduce entry thrust
• Coolant-through design supports extended run times in production drilling
• Right-hand, regular spiral flute with bright uncoated finish for general-purpose versatility

Compatibility

Designed for use in drill presses, mills, and machining centers with a No. 3 Morse Taper (3MT) spindle or taper sleeve adapter. Suitable for general-purpose drilling in ferrous and non-ferrous metals.

Installation Notes

Install the taper shank by seating it firmly into a clean, dry 3MT spindle socket using a smooth, firm push-twist motion — do not hammer. Ensure the spindle and taper surfaces are free of chips, oil, and burrs before seating. Always power down and lock out the machine before inserting or removing the bit. Wear appropriate eye protection and use cutting fluid or coolant as recommended for the workpiece material.