Pin to connect this piece to window

A quick learner from Nj says:
July 1, 2018
Trying to locate the cotter pin to reconnect crank to window.
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Dave Sr. from SWISCO responded:
July 10, 2018

Normally, this type of awning operator is connected to the window linkage by either a screw with a 10-24 thread count or an "e" ring like the 21-161. 
A quick learner from Nj says:
July 10, 2018
Found and ordered! Window works perfectly now! Thank you!!!
5/16" E-Ring
5/16" E-Ring
21-161
$0.32
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