1-1/4 (120°) Single Flute Solid Carbide Countersinks 3/4 x 3-1/2

Countersinks are precision cutting tools designed to create chamfers, deburr edges, and prepare holes for flat-head fasteners. The angled cutting geometry allows for smooth, concentric chamfer formation while improving fastener seating and part finish. Manufactured from high-speed steel or solid carbide, countersinks deliver durability, dimensional accuracy, and consistent performance in CNC and manual machining applications. Engineered for controlled cutting action, they help reduce burr formation and improve overall part quality.