OK...... Right up front....... I screwed up. I purchased a Deore DX M650 rear derailleur on the auction site and did not notice it did not have the capture nut that secures the cable. I know, I know.... not smart. Does any one have one or know the size of the threaded stud it goes on. Of all the parts I've collected over 40 years I can't find one that works and can't find a parts diagram on the web. Please take it as easy as you can on your comments. I already feel like a DA. Thanks in advance for any help or info. Js