M.a. Ford. 64100072 Countersink Set 7 Pc Hss 82 Degree

Product Description

The M.A. FORD. 64100072 is a 7-piece countersink set designed for creating clean, properly angled seat holes in a wide range of materials. Built from high speed steel (HSS) with a bright polished finish, the set covers head diameters from 3/16 inch to 1 inch, all ground to an 82-degree included angle. Each countersink features a single flute and a straight shank, making them compatible with standard drill chucks. Right-hand cutting direction ensures consistent chip evacuation. The set stores in a plastic case for organized bench or field use. Licensed machinists, tool-and-die technicians, and maintenance mechanics are the primary users.

This countersink set is suited to general metalworking, fabrication, and maintenance applications in both shop and field environments. The 82-degree included angle is the standard angle for flat-head fastener seating in most machine-screw and sheet-metal applications. The set handles a broad material range including alloy steel, aluminum, aluminum alloy, brass, cast iron, high nickel steel, high tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastics, and stainless steel. The 3/16 inch to 1 inch diameter range covers the majority of fastener sizes encountered in general production and repair work.

Key Features

• 7-piece set spanning 3/16 inch to 1 inch head diameter
• 82-degree included angle matches standard flat-head fastener geometry
• Single-flute design for smooth cutting and easy chip clearance
• High speed steel construction for durability across a wide material range
• Bright polished finish reduces built-up edge on non-ferrous materials
• Straight shank fits standard drill press or hand-drill chucks
• Plastic storage case keeps all 7 countersinks organized and protected

Compatibility

Designed for countersinking flat-head fastener holes in alloy steel, aluminum, aluminum alloy, brass, cast iron, high nickel steel, high tensile steel, magnesium, magnesium alloy, mild steel, Monel, plastics, and stainless steel using any standard straight-shank drill press or handheld drill driver.

Installation Notes

Countersinks are typically operated by machinists or maintenance mechanics using a drill press or variable-speed hand drill. Secure the workpiece firmly before operation and run at appropriate spindle speeds for the material being cut — harder materials require lower RPM. Inspect the cutting edge before each use and replace any countersink showing chipping or edge rollover. Never apply side pressure to the shank; keep the tool aligned axially with the pilot hole to prevent chatter and oversize seats.