M.a. Ford. 61125003 Countersink 90 Degree 1-1/4 Inch Hss

Product Description

The M.A. FORD. 61125003 is a single-flute, 90-degree countersink designed for chamfering, countersinking, and deburring operations in metal and non-metal materials. Built from high-speed steel (HSS) with a bright, uncoated finish, it suits applications where coating is not required or where regrinding is anticipated. The 1-1/4 inch head diameter and 1/2 inch straight-cylindrical shank make it compatible with standard drill press and milling machine setups. At 3 inches overall length, it provides adequate reach for bench and machine work. The single-flute geometry produces a smooth, chatter-resistant cut across a wide range of workpiece materials, making it a reliable choice for production and maintenance environments.

This countersink is suited for use in machine shops, maintenance facilities, and fabrication environments working with alloy steel, mild steel, stainless steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, Monel, and plastic. It handles both manual machine setups and production drilling operations. The 90-degree included angle is the standard geometry for flat-head fastener seating and edge chamfering across general metalworking and light fabrication work.

Key Features

• 90-degree included angle for standard flat-head fastener countersinking and edge chamfering
• Single-flute design minimizes chatter and produces a clean, smooth finish
• High-speed steel construction supports regrinding and extended service life
• Bright, uncoated finish suitable for use across a broad range of materials
• 1/2 inch straight-cylindrical shank fits standard collets and drill chucks
• No pilot required — tip nose diameter of 0.12 inches allows self-centering entry

Compatibility

Designed for use in drill presses, milling machines, and CNC equipment accepting a 1/2 inch straight-cylindrical shank. Compatible material applications include alloy steel, aluminum, brass, cast iron, high-nickel steel, high-tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastic, and stainless steel.

Installation Notes

This tool is installed by a machinist or tool-and-die technician in any machine spindle accepting a 1/2 inch straight shank. Secure the shank fully in the collet or drill chuck before operation, and verify runout before cutting. Always bring the spindle to a stop and isolate machine power before changing or adjusting tooling. Use appropriate cutting fluid for the workpiece material where recommended by shop practice.