Inquiry for bifold mirror door parts

I'm afraid that we don't sell replacements for the hardware in your photo. There's a good chance these aren't made anymore. 

That said, take a look at a few of our threaded bifold door pins. The two I have in mind are our 21-003, with no cap, and the 21-002, which does have a cap. You might need to cut these down to get these to work, but I think they're our best and only option. They're definitely worth considering if you're handy and you don't mind experimenting to get the right fit, though keep in mind there is no guarantee.