We use a 1/2” eye bolt that is 4 1/2” long. We include a plastic washer, back in the day they used a leather washer. The leather washers quickly disintegrated, however, the plastic washer will last and last. We also include a metal washer and two square nuts.
When mounting your bell, secure the bell and yoke to the assembly, just to finger tight. Then place the yoke into the upright. Then straighten and tighten the eye bolt and bell until your bell hangs straight and is level.

We know our #3 and #4 bell customers need a longer eye bolt than the length for #1 or #2 bell. We offer you a 1/2 “ eye bolt that is 6” long. Simply saw cut off any extra length to your determination.