nylon hex lock nut .... This is really hard to screw in it ....

nylon hex lock nut … This is really hard to screw in it … does anyone have easy way to do it right ? Thanks

They are from McMaster ? Got trouble with these too. Sometimes they get stuck and you can’t unscrew them… really poor quality. Buy a pack of proper ones locally.

@Maxime_Favre one of them is stuck in the middle way. I’m crying now… and the Screw is damaged…