pin is 4 9/16" long
pin width is 5/16"
cap top is 7/16" wide
has 2 c-clip slots
A handy person from Royal, Arkansas says:
May 6, 2015
This is a pin from a peachtree bi-fold door
Paul from SWISCO responded:
May 8, 2015
I think you should consider our Peachtree substitution top guide pin, the 21-028. The square nylon piece with the spring locks into the door housing. Could that work for you?