I see by my 1941 Machinery Handbook, you could still buy 3/32 dia. cotter pins in 1/8 increments. Nowdays, they are only available from McMaster Carr in 1/4 inch increments. A lot of original T cotters were in the 1/8 increment range. It would be nice if someone like Snyders would offer the obsolete ones again, so we wouldn't have to snip them off.
This source offers SS 3/32 cotter pins in 1/8" increments up to 1" long, then 1/4" increments above 1".
I didn't see 7/8, and besides, I don't wish to use stainless steel! Thanks for the information anyway. I can't imagine stainless cotter pins on a T. They would sure stand out.
Sorry. Just tryin to help. Someday I'll learn.
Grainger has them. Zinc plated Steel pack of 100
Dennis - There are many of us that truly appreciate the information and suggestions provided to those who ask by those who are only trying to help, such as you. Most of us (but not all) can say "thank you" without being condescending or dismissive. Don't let the others get you down. Thanks.