[Krex]

Originally Posted by RodnRudy

7/16 20 NF is fine thread. 7/16 14 NC is what you need. Do not use a flat washer under the lock washer and hex nut. You want the lock washer to bite into the part and nut.

Are you saying to use

7/16 14 x 1 inch grade 8 + lock washer + frame parts + lock washer + 7/16 grade 8 nut

Or do I need lock nut as well.

Thanks for the help