Bi-Fold Closet Door Pin Assembly, Fenestra

My current grommets measure 5/16" outer diameter of cylindrical portion; 1/4" inner diameter. The part #21-095, bifold door pin assembly, fits inside my original grommets. I ordered part #21-152 floating grommet, and they do not work for my application. Their outer diameter is too large to fit in my ... (cont.)

This is an old pin that is 5" long, 1/2" nylon cap, 1/4" diameter. We can not find this part that also has the top nylon thing like in the 2nd picture Thank you for your help.

I have missing parts to Strato Fold doors and need 4 guide pins, slide bushings, springs and any retaining items to make these stay in place. Probably from 1970s. Thank you.

Please help me identify the attached bottom pivot. 3/8 pin cap,1/4 possibly 5/16 hard to tell threaded shaft, 5 5/8 long. I would also like the part numbers for the speed nut and clip and the screw lock in the pic. The original pin cap had a wider base to sit on that obviously is worn and missing in ... (cont.)

Hi, I'm looking for the track to rehang old Fenestra metal bifold doors. Each opening fits 2 doors. Each door measures 24 inches. So I guess I need a 4' track. Would your 4' track work with these doors and the pins pictured. Thanks for your help.