The Standard!
Fasteners from reputable suppliers are made to performance specifications. These include a "proof load" test for the axial strength as well as first on, first off, and fifth off for the prevailing torque feature (the nylon, in this case). The slight variation in overall height should fit within the spec range-no bearing on performance. Correct Tom?
Terry, CFI
RV9A N323TP
There is allowance for quite a variation, it is the performance that they are concerned about.
The original standard for full bodied (NOT MINI) hex lock nuts is MIL-N-25027, which has been superseded by the NON-FREE version NASM25027
You can look up the old one on
http://assist.daps.dla.mil/quicksearch just by typing in 25207 in The Document ID Field.
It is basically the same as the copyrighted NASM25027 which I paid $15.00 for, except the new one is easier to read.
That is just the print for the overall locknut performance. it is not the print for a specific series, such as the most popular MS21044, (was AN365 but was superseded over 20 years ago).
You can bore yourself to non-productivity by reading all that stuff, unless you really need to know.
Please feel free to look up "the boiled down to what is important" info on our website. Look for the Little "TECH INFO" wrench Icons on the left side.
The entire reference book is there, just broken up by categories.
We will be updating it all to match our latest release.
http://www.gen-aircraft-hardware.com
The Tech portions are up 24-7