Navistar International 1663205C1 Button Head Bolt — a set of four bolts designed for Navistar equipment requiring a button head fastener. Each bolt is 1/2-13 in thread size and 1-1/4 inches long, offering a low-profile head for recessed mounting. The bolts are identified by part number 1663205C1 in Navistar’s catalog, making them a direct replacement for factory hardware when a button head is specified.
