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Spindle Nut Size

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Old Jul 11, 2017 | 09:16 AM
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Default Spindle Nut Size

Got a 1974 Corvette roller that needed brake work. When I took off the spindle nuts there were no washers behind them. I went to Auto Zone to get a nut/pin/washer kit and they are 3/4 - 20 but the spindle thread size with a dial caliper is .825. What is the size suppose to be? Where can I source these parts? Ecklers couldn't tell me the size although they do sell NOS kits.
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Old Jul 11, 2017 | 10:48 AM
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Hi bs,
I believe you'll find the washer has a special configuration and the size is 3/4"
Regards,
Alan


Last edited by Alan 71; Jul 11, 2017 at 10:48 AM.
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Old Jul 12, 2017 | 08:40 AM
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They are not 3/4", the 3/4 nuts I got in the kit from Autozone won't go on the spindle. Guess it's time to fabricate something.
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Old Jul 12, 2017 | 09:10 AM
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Hi bs,
You asked what size the nut/washer are "supposed" to be.
I believe they are typically 3/4"-20 with a special configuration washer.
Regards,
Alan

You can see the slot for the 'tag' on the washer so it's stabilized in place.


Last edited by Alan 71; Jul 12, 2017 at 04:05 PM.
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Old Jul 12, 2017 | 09:50 AM
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spindle nuts are indeed the oddball 3/4-20 thread
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Old Jul 12, 2017 | 10:10 AM
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Brian, can you post a picture of your spindle? You are talking about the front spindle, correct?

The picture should show the entire spindle along with the caliper/rotor as well.

Good luck... GUSTO
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Old Jul 12, 2017 | 03:36 PM
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The problem may be that the car seems to have some aftermarket parts like Greenwood adjustable shocks. I don't know if that company is still around but there are some parts on this car.
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