To get the nut started on the hinge bolts of the rudder and elevator, the illustrated “nut lifter” was devised. The off-set end is used at the main center hinges on both the elevator and rudder. The 5/32 rivets are driven and expanded to a size that will hold a quarter inch castle nut snugly.
Because it is necessary to work through such a small opening to get the nut started, the tough part of the job, this GIMMICK is a must for installation of control surfaces.