Hand threading tap with straight flutes cuts threads in through holes and blind holes * Machine-screw tap sizes, in frequent demand for many industries and products * Available in UNC (Unified Coarse), UNF (Unified Fine) or UNS (Unified Special) right-hand thread options for different applications * High-speed steel is compatible with a variety of materials * Uncoated (bright) tools have no additional surface treatment or coating, for use on a broad range of materials