(32) A large diameter thin flat countersunk head bolt with plenty of surface area to secure the bucket and minimize chances of head "pull through" during hang ups. For use on pulleys larger than 6 inches in diameter.
(21) A large diameter thin countersunk head bolt similar to a No. 1 but with two fangs on the underside of head. Fangs penetrate the belt and prevent the bolt from turning during installation and removal. For use on pulleys larger than 6 inches in diameter. Pointed end aids in installation of bolt. Pointed end not available in 3\8" diameter.