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Seat adjuster thread size

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Old 01-03-2018, 06:28 PM
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lucasl
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Default Seat adjuster thread size

Does anyone know what size thread or bolt is used in the seat adjuster thing, one of mine has snapped off so I need to drill and tap it. None of my taps are the right thread, I am from UK so maybe that’s why!
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Old 01-03-2018, 07:40 PM
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caskiguy
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Originally Posted by lucasl
Does anyone know what size thread or bolt is used in the seat adjuster thing, one of mine has snapped off so I need to drill and tap it. None of my taps are the right thread, I am from UK so maybe that’s why!
GM #3901496 is the part number, maybe 7/16" (?)

http://www.lincolnmachine.com/tap_drill_chart.html

You may consider an email to Willoxcorvette.com and inquire
https://willcoxcorvette.com/corvette...er-upper-70-78
Old 01-04-2018, 09:22 AM
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Alan 71
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Hi Lucas,
The stop on my 71 seats is a 5/16"-24 thread.
I hope you can locate the proper sized tap.
Regards,
Alan

Last edited by Alan 71; 01-04-2018 at 09:22 AM.
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Old 01-04-2018, 05:02 PM
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lucasl
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Hi thanks yea I took the bolt into a fixings place and they have ordered me a tap for it ��

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