Industrial ST13859 Reamer

Industrial ST13859 Reamer is a precision cutting tool designed to refine drilled holes to their final size, delivering tighter tolerances and a smoother bore surface in metalworking and fabrication environments. The ST13859 designation identifies a specific reamer model within an industrial tooling lineup, typically used after drilling to bring a hole to exact diameter and improve concentricity for critical fits. Reamers come in straight-flute or spiral-flute configurations and are commonly manufactured from high-speed steel or carbide, with ground cutting edges and precision-ground shanks to ensure runout control when mounted in machine tools or drill presses. This class of tool is chosen when a bore must meet tight dimensional tolerances, such as for bushings, pins, dowel holes, or bearing seats, and it supports consistent hole quality across multiple workpieces in production settings. While exact size, tolerance, and coating details for the ST13859 model vary by catalog and application, the underlying purpose remains the same: to finalize hole size and surface finish after an initial drilling operation, enabling reliable assembly and long-term performance in automotive, aerospace, and general manufacturing contexts.