Posted by Joe Cimoch on Saturday, November 26, 2005 at 9:04PM :
I scanned and uploaded some more Warn hub info, sales brochures and parts pages, along with Paul's maintainance pages (thanks Paul), click on the "original" link down at the bottom to get the picture to enlarge on the ImageEvent site.
You'll see descriptions for Lock-o-matic, Locking, Automatic, and Standard hubs. I didn't know there were that many styles. The model numbers don't correspond with the "M" number on the brass control either. My W100 hub is a Model DL-21, the brass control has "M7" stamped in it.