M.a. Ford. 79250002 Countersink 82 Deg 6 Flute Hss

Product Description

The M.A. FORD. 79250002 is a 6-flute, high-speed steel countersink designed for chamfering, countersinking, and deburring operations in metal and plastic workpieces. It features an 82-degree included angle with a 2-1/2 inch head diameter and a straight-cylindrical 3/4 inch shank. At 5 inches overall length, this tool is sized for use in drill presses, milling machines, and CNC machining centers where consistent countersink geometry is required. The bright uncoated finish suits general-purpose applications across a wide range of workpiece materials. Installation and operation are performed by machinists and toolroom professionals.

This countersink is suited for production and toolroom environments handling alloy steel, mild steel, stainless steel, cast iron, aluminum, brass, magnesium, magnesium alloy, high-nickel steel, high-tensile steel, Monel, and plastic workpieces. The 82-degree angle matches the standard countersink geometry required for flat-head fastener seating in aerospace and general machining applications. Its 6-flute design provides smooth cutting action and reduces chatter on a broad range of materials.

Key Features

• 82-degree included angle, 41-degree centerline angle for flat-head fastener compatibility
• 6-flute geometry for smooth, chatter-resistant cutting action
• High-speed steel construction handles a wide range of workpiece materials
• 2-1/2 inch head diameter for larger-diameter countersink applications
• Straight-cylindrical 3/4 inch shank for standard chuck and collet mounting
• Bright uncoated finish - no coating buildup to affect dimensional accuracy
• Single-end, no-pilot design for flexible use across varying hole diameters

Compatibility

Designed as a general-purpose countersink for use in drill presses, knee mills, and CNC machining centers equipped with a 3/4 inch straight-shank toolholder or collet. Compatible with alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel workpieces as specified by the manufacturer.

Installation Notes

This tool is installed and operated by machinists or toolroom personnel. Secure the shank firmly in a properly sized collet or drill chuck before operation and verify runout before cutting. Always reduce spindle speed when countersinking stainless steel or high-tensile materials to prevent work hardening and premature tool wear. Inspect the cutting edges before each use and remove the tool from service if chipping or wear is observed.