Value Collection GH8780561 Counterbore 7/8 in 3 Flute MT2

Product Description

The VALUE COLLECTION GH8780561 is a 7/8-inch interchangeable pilot counterbore designed for precision counterboring operations in metal fabrication and machining applications. Built from high speed steel with a bright, uncoated finish, this tool delivers reliable cutting performance across a range of ferrous and non-ferrous materials. The 3-flute geometry provides balanced chip evacuation and smooth cutting action. A No. 2 Morse Taper (2MT) shank provides secure, concentric tool holding in compatible drill press and milling machine spindles. Overall length is 5-3/8 inches, and the tool accepts a 1/4-inch pilot shank for accurate bore alignment.

This counterbore is suited for machine shops, maintenance facilities, and production environments where consistent counterbore depth and diameter are required. It is appropriate for use on drill presses, milling machines, and similar equipment fitted with a No. 2 Morse Taper spindle. Right-hand cutting direction makes it compatible with standard spindle rotation. The interchangeable pilot design allows the tool to be used with different pilot diameters as the application demands, extending versatility across multiple job setups.

Key Features

• 7/8-inch counterbore diameter for standard fastener head clearance applications
• 3-flute design promotes balanced cutting forces and efficient chip removal
• No. 2 Morse Taper (2MT) shank seats securely in compatible spindles without additional toolholders
• High speed steel construction withstands the heat and wear demands of general-purpose metal cutting
• Interchangeable pilot system accepts 1/4-inch pilot shank for precise bore alignment
• Bright, uncoated finish suits a wide range of materials without coating compatibility concerns

Compatibility

Designed for use in drill press and milling machine spindles with a No. 2 Morse Taper socket. Accepts a 1/4-inch diameter interchangeable pilot shank.

Installation Notes

Installation and tool changes should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before inserting or removing the taper shank from the spindle. Clean the Morse Taper bore and shank mating surfaces before seating to ensure proper alignment and prevent spindle damage. Use a drift and knockout bar through the spindle slot to remove the tool safely — never strike the tool body directly.