Please advise: metal bifold replacement parts

A contractor from Pittsburgh says:
April 20, 2018
Looking to replace this piece
Thumbnail of the uploaded file named 20180420_095420.jpg
Thumbnail of the uploaded file named 20180420_095436.jpg
Profile picture of Paul
Paul from SWISCO responded:
April 24, 2018

Hello,

I believe this was an additional locking device on the bottom threaded pivot pin. It was replaced with a wire spring as you can see in our 21-001 threaded bi-fold pin. Let us know if you have any other questions or concerns. Thank you.
Bi-fold Door Pivot Assembly
Bi-fold Door Pivot Assembly
21-001
$6.95
How to Install Bi-Fold Closet Door Pins
How to Install Bi-Fold Closet Door Pins
VIDEO
WATCH >
Bi-fold Door Repairs
Bi-fold Door Repairs
GUIDE
READ >
Reply to Thread
Use this form to ask a follow-up question or to share your experience regarding this subject.
(your email address will be kept private and is only used to inform you when a response has been made)
Current wait time is 3-4 business days
We promise that one of our experts will personally get back to you as soon as they are able. Thank you very much for your patience and understanding. If your inquiry is time-sensitive, please feel free to reach us at (888) 991-1929 or at help@swisco.com.