Top pin for steel bifold door

A contractor from Miami,Florida says:
I have a customer with about 6 metal bifold doors. I am looking to replace all of the top push pins on them. What is your replacement part # for the style in my attached photo.
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Paul from SWISCO responded:

You are showing a National Bi-fold door. The top pivot pin in your photo is the 21-041. The other pin that's used is our 21-072, a spring loaded guide pin that is used for the top and bottom track. Lastly, the bottom adjusting pivot pin is our 21-046. Look over all the parts mentioned and see what you think.

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