What is this..??

Kendog 170 said
Can someone clarify what year to what thread type? I have 1 of each on my 68 Ragtop dart and need to correct. Had a bend in one when restoring and didn't realize there were two styles when grabbed a replacement from my parts hoard. :BangHead:

Fine thread are 67-72 coarse are 73-76. With the coarse thread they take and inner steel sleeve and two piece bushing only. The fine there two piece are available but they are different and to not take a sleeve. The one piece 67-72 use factory washers only