Are there any official (published) specifications, guidelines or best practices for selecting and using taper pins? AC 43.13-1B doesn’t have too much to say about taper pins except that they are used “where the absence of play is essential” (7-101). The Bingelis books don’t seem to have anything on them at all. Aircraft Spruce’s site just mentions the narrow end, but not how much of the shank should protrude at the back, etc. The designers must have had some rules in mind.

Joe