HSS Stack Annular Cutters (6-Series) Unibroach (R), 7/16", 1" 6-1-114 STACK

Diameter Up to 2. Drilling Depth Up to 3. Pilot pin included with each cutter. See Replacement Pilot Pins. Benefits. Manufactured from premium High Speed Steel (HSS) for excellent heat resistance and long tool life. Produces clean, burr-free holes across all layers in the stack. Maintains sharpness and cutting efficiency even in demanding, multi-layer drilling applications. Every cutter comes with a corresponding pilot pin. Supports a wide range of hole sizes and stack thicknesses. Applications and Usage. HSS Stack Annular Cutters are designed to cut multiple layers of stacked material. Ideal for drilling through stacked beams, plates, and structural components used in construction and industrial steelwork. Perfect for shops working with layered assemblies, brackets, frames, and welded structures. Excellent for onsite drilling where stacked materials are common, such as equipment mounting, steel erection, and infrastructure work. Enables clean, precise holes through layered steel for conduit, hangers, supports, and mechanical installations.