bolt

I was cleaning the filter and now the barrel nut is not staying on steel bolt that is attached to the clamp. I can tell the threads are messed up. Is there a way to replace just that bolt? I see it's available for sale but wasn't able to find any info on changing it out. I would hate to change...

I replaced the motor (century motor B2854) on my Whisperflo pool pump (Schematic). I bought a new seal kit, and replaced items 11, 16, and 9. On 11 and 9 I used some lubricant when installing. On 16, I put some silicone around the side that goes into the seal plate, and nothing around the side...