The Prime-Line K 5131 Storm Door Hinge Pin Kit is used as replacement door hinge pin kits for Croft storm doors and a variety of other storm door manufacturers. The storm door hinges pins and bushings work with the spring within the hinge to create a spring-loaded pivot point. Designed to keep storm door aligned while operating. Constructed with steel springs and nylon pins and bushings, this storm door hardware is easy to install with a few simple tools. The storm door hardware kit includes three springs measuring 2-9/16 inch in length and six hinge pins and bushings measuring 5/16 inch in diameter. Please refer to the line art drawing for dimensions and compare with your needs before purchasing.