The manual calls for A4-11 bolts to hold these pulleys, but I'm already out of 11A, including all the extra I bought, so 12A with an extra washer will do. I found these pulleys very difficult to install; just really hard to get the washer and nut on underneath. If I had it to do all over again, I would have installed the pulley at the same time as when I installed the bracket to the airframe a few steps back.
