need new bifold hardware

Hi - I have 2 metal bi-fold louvered doors; one of them is missing a couple of parts (I have pictures of the missing parts -- pictures + some comments added to them ... with the names of the parts maybe incorrect in the pics).

2 of the following (top of door): 6.5" pivot rod; 1/4" diameter; spring: 1 3/4" long; small circle: 6/16" ( 3/8"); larger circle: 7/16"; Pin Cap: 9/16" length, 3/4" diameter (larger circle), 6/16" diameter smaller circle

1 of the following (bottom of door): plastic Pin Cap: 7/16" length, larger circle:10/16" (5/8") diameter, smaller circle: 6/16" (3/8") diameter
(note: this fits on top of threaded pin / pivot rod -- it looks like this rod is about 5 3/4" long but I could have length slightly wrong)

1 of the following: the part that goes into the railing on the bottom where the threaded pin / pivot rod goes into (via its pin cap)

Thanks very much -- just need that other item -- the plastic Pin Cap for the threaded pin (the one that doesn't spring up and down) on the bottom of the door: 7/16" length, larger circle:10/16" (5/8") diameter, smaller circle: 6/16" (3/8") diameter

** This pin cap is different from the pin caps for the other pins (the pin it fits on is about 5 3/4" long).