When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Thanks for sending the pic! From what I can see, it is the same type of clip I am trying to use (E-Clip/circlip). I've tried different sizes without success. I'll try again.
I remember a while ago I went through something similar because I had a e-clip go flying and I couldnt find it and I went around buying a bunch of different sizes. Looking in my drawer I have a couple unopened bags of e-clips and they're all 3/16"
Bought some clips for something or other on the car a while back - can't remember what it was for now, do recall he standard metric E clip covers a mm or two tolerance, rather than an exact size. The standard clip rotates easily on the arm too.
If verniers can't get in there easily to measure the shaft, I might try plastacine, window putty or similar to work it out. I'd hazard a guess, you'd probably be looking at 4~5mm - packs of 50 (or maybe 100?), are a couple bucks over here in that small size.
Really glad I ordered Part #9957-50-400 per MKD's suggestion through Atkins Rotary. I had a metric E-Clip on there that seemed to fit ok, but Part #9957-50-400 gets much more "bite" and will hold much better. The standard E-clip may have worked for a while, but at some point it would have likely fallen off.