Maybe I don't know what you were talking about. I thought the technical name was screw, which is inserted into the wallowed out hole. Depending on the type used , it may or may not require the use of a nut. Sometimes thingamabobs are installed incorrectly causing the nub of the shift collar(where the pin goes through) to crack into 2 pieces. This is when you need a do-hickey. These technical wonders are also atractive bling-blings as they are chrome plated looking. They have a slotted band with an adjustment device (similar to a worm drive) that can be adjusted with either a slotted screwdriver or pliers or a socket. They are a direct fit that slips right over the broken nub and restores integrity when tightened. The good news is that I happen to have some of these in stock. (These are becoming harder to find with the newer slip hose fittings out there.) The bad news is these are not quite as affordable as the thingamabobs. For you , I may be able to make a deal.