M.a. Ford. 61025004 Countersink 100 Degree 1 Flute Hss

Product Description

The M.A. FORD. 61025004 is a single-flute, high-speed steel countersink designed for chamfering, countersinking, and deburring operations in a wide range of materials. It features a 100-degree included angle (50-degree centerline angle) and a bright, uncoated finish. The straight-cylindrical shank measures 0.25 inches in diameter, and the tool runs to an overall length of 2 inches. With a tip diameter of 0.045 inches, it is suited for precise entry into tight-tolerance holes. This tool is typically installed by machinists, tool-and-die professionals, and maintenance technicians working in fabrication or production environments.

This countersink is appropriate for use on a broad range of materials in both shop and field settings. It handles alloy steel, mild steel, high-tensile steel, high-nickel steel, stainless steel, cast iron, Monel, aluminum, brass, magnesium, magnesium alloy, and plastic. Its single-flute geometry produces a smooth, chatter-resistant cut, making it well-suited for manual drilling setups as well as CNC and drill-press applications where consistent countersink geometry is required.

Key Features

• 100-degree included angle for standard countersink and chamfer profiles
• Single-flute design reduces chatter and improves surface finish
• High-speed steel construction provides durability across a wide material range
• Bright, uncoated finish suitable for general-purpose applications
• Straight-cylindrical shank at 0.25 inches for broad chuck compatibility
• No pilot required — single end, non-piloted design

Compatibility

Designed as a general-purpose countersink compatible with standard 0.25-inch straight-shank drill chucks and collet holders used in drill presses, hand drills, and CNC machining centers.

Installation Notes

This countersink is installed and used by machinists, fabricators, and maintenance technicians. Secure the straight-cylindrical shank firmly in a compatible 0.25-inch chuck or collet before operation. Power down or de-energize the machine completely before changing tooling. Use appropriate cutting fluid or lubricant when working with ferrous metals or stainless steel to extend tool life and improve finish quality.