RPM
The Rat Master!
How many of you have actually seen a heim fail and the flat washer kept it from falling apart? No BS about you heard of that. YOU actually saw it or it happened to you.
Yep, I was in the marine industry and saw more than one where the ball had slipped out of the socket. As Rex said, they are used on rudders and generally the ones that I saw fail were on twin rudder boats, they used them as tie bars. Now, corrosion may have been a factor, as the ones I saw were rusted in most cases, but they did fail.
Don