01U500 - Walter 2-Inch M2 HSS Countersink with Weldon Shank

Heavy-Duty 2" Countersink for Stainless and Steel

Achieve superior hole preparation results with the Walter 01U500, a robust 2-inch countersink built for the professional welder and machinist. This tool is manufactured from high-grade M2 High-Speed Steel, a material renowned for its toughness and ability to hold a sharp edge even when cutting through hardened or abrasive metals. With an 82° point angle, it is perfectly suited for creating countersunk holes for standard imperial flat-head fasteners, as well as for general deburring and chamfering tasks on drilled holes and tube ends.

The standout feature of this Walter countersink is its advanced cutting geometry. Traditional countersinks often suffer from "chatter"—a vibration that leaves a wavy, uneven surface on the workpiece. Walter has addressed this with a variable pitch flute design. By spacing the cutting edges at unequal intervals, the tool breaks up the resonant frequency that causes chatter. The result is a remarkably smooth, chatter-free cut, even when working on difficult materials like stainless steel or aluminum. This precision ensures that fasteners seat perfectly flat, maintaining the structural integrity and aesthetic quality of your assemblies.

Designed for high-torque applications, the 01U500 is equipped with a Weldon shank. Unlike round shanks that can spin inside a chuck under heavy load, the Weldon shank features a machined flat that engages with the tool holder's set screw. This positive locking mechanism guarantees zero slippage, allowing you to utilize the full power of your drilling machine to drive this large 2-inch cutter. This feature is essential for safety and performance when chamfering large holes in thick plates or structural beams.

Furthermore, the tool benefits from a specialized surface treatment that minimizes galling and material adhesion. This is particularly beneficial when working with non-ferrous metals that tend to stick to cutting edges. The optimized tip geometry ensures quick engagement with the material, reducing dwell time and heat generation. Whether you are deburring pipe flanges, preparing bolt holes in heavy machinery, or finishing architectural metalwork, the Walter 01U500 delivers consistent, high-quality results that streamline your workflow and reduce tooling costs over time.