A little background on the why I was looking to replace the cotter pin on my Wheel Horse snow plow frame:
I bought a snow plow a while back that did not have all the hardware / parts ie it was missing the pivot and spring rods that connected the frame to the plow itself. Procrastination led to a small snow storm that blew in last night and no way to go play in the snow ... So I stopped at the local steel shop and picked up some 1/2" HR round bar. The manual shows a cotter pin holding the bar in place however I don't have a drill press at the moment and I didn't want to risk goofing up the bar trying to drill it by hand. Since I was stopping by TSC for some misc hardware; I started looking around & brainstorming of different ways to hold the round bar in place without too much fabrication. The idea evolved into using Axle Cap Nuts (most dad's / grandpa's have assembled these to hold wheels on Red Wagons, kids push cars, etc).
GIven that the pin / axle nut should see very little side loading I figured this would be a neat solution to repacing the orignal cotter pin design. They are fairly easy to put on, look clean and are cheap. Attached are a couple pictures of the installed rods and axle nuts.
Hopefully that helps someone in the future!
Edited by jrk, December 26, 2012 - 03:49 PM.