Well guys, the 2-3/16" SKF hook spanner showed up today. I was so confident this thing was going to be a perfect fit because I measured the dia of the gland nut and that's very close to what it was (56mm). It was far too big - closer to 3-3/16". In fact the only measurement I could take of this thing to get 2-3/16 was diagonally from the tip of the tooth to the heel flat.

As far as I can tell, I measured it correctly and that's how these wrenches are sized. Mike, I used your tool number reference from McMaster-Carr to bring up their hook spanner page at, http://www.mcmaster.com/#catalog/117/2751/=bfnw8k

Thanks for that reference, Mike! The one you listed is a 2" to 4-3/4". I got lucky and found an adjustable 2" - 4-3/4" JH Williams #474 for $13 shipped on ebay. I hope I don't eat eBay crow again!!! Pipe wrench is next if this is a fail.

The SKF wrench is probably sized to match some kind of 2-3/16" gland nut or seal or whatnot. Otherwise a very nice quality forged piece! Definitely not a knockoff... but totally useless for this job. :(

Steve