set screw

I need to change the cartridge of the hot water side of the bathroom sink faucet; however, I am unable to open the set screw. I believe there is a salt deposit at the set screw. Can you please advise if there is a way to open the set screw?

Faucet handle came off of stem. I assumed that a hex set screw attached it, but no screw found, and the hole where I would think a screw would go doesn't go all the way through; plus I don't see threads (though it's very small; hard to see). I tried an 8/32 and 6/32 screw; both seemed too big...

I have a Moen shower handle (unknown model) that doesn't seem to have a set screw. Before I go yanking on the handle, any thoughts on how to take this piece off?

Hi, all. When I run bathwater from a new spout (no diverter) I just installed, water flows freely from the opening that allows access to the set screw. My non-exhaustive internet research didn't turn up much but one article did suggest I may have overtightened the set screw, thus damaging or...

Hey everyone, I've scoured the forums here but haven't been able to find an answer. I have a Glacier Bay single handle shower set. I need to replace the shower cartridge. I went to unscrew the set screw and it was stuck. I put a little muscle to it and the extra torque just twisted it off...

A while back a plumber moved the valve and the water only gets lukewarm, if that. I'm trying to remove the handle to get to the valve but there doesn't seem to be a set screw, and if there is my hex wrenches aren't doing anything. How do i remove it? In the image it may look like there are 2...