Bolts

[Gary B.]

Re: Bolts

Thank you Gary!

Now to find a source for these. I'm surprised these are not grade 5 or 8 bolts. CC sells grade 5 with different head markings for this application.

AIM lists PN 100161. Is there a reference that provides the specs given the PN?

David Bartush provides the specs for 100161 in post #10.

Gary

[David B.]

Re: Bolts

The '63 AIM Section 7 B2.00 lists the possible usage of 2 different type bolts. If you have #100161 it is plain 1/2-13 x 1 3/4 GM 260-M if you have #9417294 it is cad plated 1/2-13 x 1 3/4 GM 280-M. Take your pick which set you have. These are GM specs.
I looked at that forum and it appears they are a little confused.

[Mark E.]

Re: Bolts

Thanks again David!

[Gary B.]

Re: Bolts

IMG_4677.jpg

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[Patrick H.]

Re: Bolts

...to replace the incorrect zinc plated bolts I purchased from either Paragon or LIC. This is another case of the catalog companies selling a zinc plated repro fastener instead of the unplated original, which is common for many transmission and shifter-related bolts. I suspect the repro parts companies don’t want to keep unplated bolts in inventory that might rust before being sold.

Gary

It's not just transmission and shifter bolts; those happen to be your area of interest.
I de-zinc and then phosphate a lot of bolts, nuts, washers and studs going onto Corvettes.

It's not just inventory rusting, but most owners (NCRS is a small crowd) don't care about the finish other than not wanting to see rust months after installation.

[Gary B.]

Re: Bolts

Patrick,





IMG_4681.jpg

The items numbered 2,3,4,6,7,8,9, that typically include a quantity of more than one of each, comes to a combined total of 22 pieces. None of those 22 items was originally zinc plated. If you buy those 22 items from Paragon today, they all come zinc plated.


Gary