There is a tool called a nut splitter available for $4 to $30+. Google ?nut splitter?. If the studs are welded to the seat support, split and remove the nuts and replace them with something SAE with corrosion protection. A six point 14 MM socket may work better than a 12-point. And, there?s always a big Vise Grip Decimal conversions: 9/16?: 0.5625? 14 MM: 0.5511? 17/32?: 0.53125? 13 MM: 0.5118 ? ½?: 0.5000? Good luck. Let us know what standard that nut was built to. Rich Barber From: Chrysler300@xxxxxxxxxxxxxxx [mailto:Chrysler300@xxxxxxxxxxxxxxx] On Behalf Of Mark Schueller Sent: Sunday, July 15, 2012 6:59 PM To: Chrysler 300 Club Subject: [Chrysler300] Front seat removal 300F Hi Gang: I'm having a bear of a time trying to remove the front seat of my 300F. It appears that the nuts under the car securing the seat to the floor are a weird size. The nuts on my car are bigger than 1/2" and smaller than 9/16". It sounds like a stupid question but it has me stumped. A "test" nut had undercoating on it so I burned it off and cleaned the nut up good. No luck. I can't find a deep well 17/32" socket (they don't seem to exist) and size 13 & 14 metric don't work either. All comments appreciated. Mark Schueller 300C,F [Non-text portions of this message have been removed] [Non-text portions of this message have been removed] ------------------------------------ To send a message to this group, send an email to: Chrysler300@xxxxxxxxxxxxxxx To unsubscribe from this group, send an email to bob@xxxxxxxxxxxxx or go to http://autos.groups.yahoo.com/group/Chrysler300/join and select the "Leave Group" button For list server instructions, go to http://www.chrysler300club.com/yahoolist/inst.htm For archives go to http://www.forwardlook.net/300-archive/search.htm#querylangYahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Chrysler300/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/Chrysler300/join (Yahoo! ID required) <*> To change settings via email: Chrysler300-digest@xxxxxxxxxxxxxxx Chrysler300-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: Chrysler300-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/