Chicago Latrobe Tool Works C24259 Taper Pin Reamer

Chicago-Latrobe C24259 Taper Pin Reamer is a precision straight-flute reamer sized for a #4 taper pin, designed to create accurate, evenly tapered holes for tapered pins in jigs, fixtures, and machined components. Constructed from high-speed steel with a bright finish, this reamer measures 0.2071 inches at the small end and 0.2604 inches at the large end, with an overall length of 4-1/16 inches and a straight shank for compatibility with standard reaming holders. The straight-flute geometry supports consistent hole diameters and edge quality, helping ensure reliable pin location and repeatable assembly across setups. Typical use cases include preparing holes in tooling, fixtures, and assemblies where a precise taper-pin fit is required, enabling accurate alignment of parts during machining or assembly operations. The C24259 designation identifies the #4 taper-pin size, a common specification found in Chicago-Latrobe catalogs and widely carried by distributors for professional machine shops that perform tapered-hole reaming for locating pins.