The clevis to clevis style of swivel is the most common type and is the best for distributing side loads applied on the swivel due to its ability to pivotat either end. It does not allow the operator to push back without proper care and attention or the swivel may fold back on itself. Before rotation is recommenced, the line must be pulled straight or damage may occur to the swivel, as well as potential harm to nearby operators.
It is recommended that some type of restrictor be used to prevent the swivel from pivoting at the front or reamer end. For swivels 00503-202 to 00503-215, the clevis is deeper at the leading end to allow the fool-proof design of a lug that would prevent more than minimal movement of the swivel away from the axis of rotation and also ensures the swivel is pulled in the right direction.
