Hi guys and gals, im new to the site, so hello to all of you from Portsmouth, England. Little question for someone with a bit more expertise than me would be appreciated...I have a 1985 FXWG, 4 speed evo engine in a shovel frame. Im trying to replace the swing arm pivot bolt ( part no 47510-58 I beleive) Is this bolt threaded into the frame or is it just secured with a nut and locking washer? All I can see on the primary side is thread with no bolt head on it? And on the other side(The side with the air cleaner) is the nut and lock washer. What is supposed to be on the primary side?? Many thanks.