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21-151 5/16" Nylinder

Trying to figure out what parts to buy for top and bottom stationary and the ones that move also need plastic parts that go into track .basically need all the parts

I'm having some trouble locating the hardware for my bi fold doors. I've checked the stuff at the big box stores and it isn't long enough to fit through both holes and I cannot find the plastic bushings that the rods go in. Perhaps you can be of some assistance thank you.

I need help at getting the right size top and bottom pivots, for my bifold doors. I would also like to get more brackets for the pivots but don't know the right size. And while I'm at it I'm going to get the glide pins replaced.

I checked a previous post by some one else that fortunately for them, they had the square hold to work in the mechanisms into the doors to connect to the track. Unfortunately, my doors do not have the square hole, just two round holes of the same size as two alternatives to insert the pins. I need 3 ... (cont.)

I need lower guide pin parts that is shown in the attached photos. The label on the door says it is model "D" door with date of year 1973. The door is a metal bifold 7.5 feet high.