70sWagoneers Posted September 16, 2018 Share Posted September 16, 2018 (edited) 1937 Buick Special 40 Im replacing my pinion bearings and the pinion nut chipped out where it was staked when I took it off. I need some help finding a replacement. The diameter of the threads on the shaft measures 1.150" and the threads inside the nut measure 1.000". And the thread pitch is 20. So I believe I'm looking for a 1-1/8x20 nut. Which I dont see at all on the internet so far. Anyone have any leads or know anyone to call? If theres no chance of replacement I'll just use some blue loctite on the original nut. Thanks James C Edited September 16, 2018 by 70sWagoneers (see edit history) Link to comment Share on other sites More sharing options...
DonMicheletti Posted September 17, 2018 Share Posted September 17, 2018 If your nut isnt totally destroyed, you can make a thin shim to between the bearing and the nut so that you have a new area to stake the nut in place. Link to comment Share on other sites More sharing options...
Pete Phillips Posted September 17, 2018 Share Posted September 17, 2018 I just looked up the part # but I don't have one. Have one for big series 1937, but not Specials. FYI, part number for what you want is Group 5.445, Part #595904. Pete Phillips, BCA #7338 Link to comment Share on other sites More sharing options...
DonMicheletti Posted September 17, 2018 Share Posted September 17, 2018 Also, you can machine a bit off the back of the nut. Link to comment Share on other sites More sharing options...
Dave39MD Posted September 18, 2018 Share Posted September 18, 2018 (edited) If 595904 is the part number for the nut you need, I have quite a few nos. Send me a pm if you are interested. Dave Looks like some may be nors, notice the shoulder is 90 on some and rounded on others. Let me know which matches yours. Edited September 18, 2018 by Dave39MD more info (see edit history) Link to comment Share on other sites More sharing options...
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