AutomationDirect’s line of RUKO countersink bits now include bits to accommodate UNC, or imperial (inch), fasteners. The round shank, 82-degree taper countersinks are CBN ground from fully hardened, high-speed steel blanks which creates a sharper and more durable cutting edge with precise tolerances. Combined with axial relief grinding, this guarantees a smooth, low-heat, chatter-free cut up to 30% faster than competing countersink bits.
RUKO countersinks are suitable for standard industrial materials, such as steel, cast iron, stainless steel, non-ferrous metal, thermoplastics, and duroplastics.
Available in diameter sizes ranging from ¼-inch to 1-inch, and in individual pieces or a five-piece set, prices start at $10.00.
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