M.a. Ford 61062504 Countersink 100 Degree 1 Flute Hss

Product Description

The M.A. FORD 61062504 is a single-flute, high-speed steel countersink designed for chamfering, countersinking, and deburring operations across a wide range of materials. It features a 100-degree included angle and a 0.625 inch head diameter, making it well suited for standard fastener seat preparation and edge finishing. The straight-cylindrical shank measures 0.25 inches in diameter, and overall length is 2.25 inches. The bright, uncoated finish is appropriate for general-purpose cutting across both ferrous and non-ferrous workpieces. This tool is installed and used by machinists, toolroom technicians, and maintenance trades working with drill presses, CNC machining centers, or hand-held power tools.

This countersink is appropriate for use in job shops, production machining environments, and MRO applications requiring consistent, clean seat geometry. The 100-degree included angle is a common specification for aerospace and general mechanical fastener applications where a wider seat angle is required. Its compact 2.25 inch overall length makes it practical for use in confined setups or with standard drill chucks. The single-flute design reduces chatter on entry and is well suited for accurate, controlled countersinking by hand or machine.

Key Features

• 100-degree included angle for wide-seat chamfering and fastener prep
• Single-flute geometry minimizes chatter and improves concentricity
• High-speed steel construction provides durability across a broad material range
• Bright, uncoated finish allows direct use without coating-related material restrictions
• Straight-cylindrical 0.25 inch shank fits standard drill chucks and collets
• No pilot required — single end, solid construction simplifies tool changes

Compatibility

Rated for use on alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel. Fits any tool holder accepting a 0.25 inch straight-cylindrical shank.

Installation Notes

This countersink is installed by machinists or maintenance technicians in a drill press, milling machine spindle, or portable power tool with an appropriate chuck or collet. Secure the shank fully in the holder and verify runout before cutting. Always reduce spindle speed when countersinking harder alloys such as stainless or high-nickel steel to extend tool life. Wear appropriate eye protection and ensure the workpiece is clamped securely before beginning the operation.