AT HSS Countersinks

Alfa Tools manufactures high-speed steel (HSS) countersinks, precision cutting tools designed to create conical recesses for flush-mount fasteners and chamfer hole edges across metal, aluminum, steel, stainless steel, and composite materials. Featuring precision-ground HSS construction with multiple flute configurations (single, 3, 4, 5, and 6 flutes) and three standard angles (60°, 82°, and 90°), these countersinks deliver clean, accurate countersunk holes for flathead screws, rivets, and professional edge finishing. Ideal for machinists, aerospace technicians, tool and die makers, fabricators, and manufacturing professionals requiring consistent, repeatable countersinking operations.