This Thompson Center manufactured blue finished barrel hinge / pivot pin retaining screw is for the Triumph in-line muzzle loading rifle and is in very good condition with light wear.  (file photo)

Note: Thompson Center Triumph muzzle loaders with the following serial numbers have been observed with this part:

Rochester, NH: 40043

Springfield, MA:

Note: If this item is sold out, the listing with product code 80371-Triumph is slightly longer in length but will work as a replacement without the need of any modifications.