A guy came to me needing a left handed thread 7/16-14 bolt. 1 3/4" length, with a 3/4" hex head. Grade 5.
Can anyone find me a place online, or if they are from IL, if they know a store near chicago area(joliet) where I can buy one.
McMaster Carr got me all the way there, except the pitch... All they have in LHT is 3/8"-16 , 1/2"-13, 3/4"-10.
I am sure you have tons of options for a specialty nut and bolt store in Chicago, though...
Maybe try calling Fastenal:
272 Front St.
Braidwood, IL 60408