Identifying an original 1967 air cleaner wing nut

[Rich P.]

Re: Identifying an original 1967 air cleaner wing nut

The wing nut for the 59 looks correct. One of the tell tale signs is the "pregnant" wings. If you look close on the 2 sides of each flat from a side view they bow out from center and are not parallel.

[David B.]

Re: Identifying an original 1967 air cleaner wing nut

Please provide a part # for this '67 and '59 wing nut. This SHOULD provide simple answer with no guess work.!

[Brad K.]

Re: Identifying an original 1967 air cleaner wing nut

The '59 AIM shows 117204 as the wing nut part number.....

[Calvin M.]

Re: Identifying an original 1967 air cleaner wing nut

My notes say the later wing nut is p/n 219281, for 63-72 carbs using a 1/4-20 stud.

[David B.]

Re: Identifying an original 1967 air cleaner wing nut

The '59 AIM shows 117204 as the wing nut part number.....

Brad,
the 59 wing nut Part # 117204 as defined by GM Engineering Standards is: Type A wing nut (which you show) 1/4 - 20 chrome-bright
the wing spread is 1# at max. outside, total wing height is 1/2" , total distance between wings inside base is 9/32 Can give you radius of wings, thickness of wings etc. etc. etc. if you need. Email me if you need picture.

[Brad K.]

Re: Identifying an original 1967 air cleaner wing nut

David...I am curious....where did you find the details on this wing nut?....I've never been able to find anything before....

[David B.]

Re: Identifying an original 1967 air cleaner wing nut

My notes say the later wing nut is p/n 219281, for 63-72 carbs using a 1/4-20 stud.

Calvin,
The '67 wing nut part # 219281 is listed by GM Engineering Standards as a Type B 1/4 - 20 chrome-bright it is listed as having a total wing spread of 1-9/32 , wing thickness of 9/32, total wing height 9/16, spread between wings at base inside 7/16, etc. etc. etc.
There are 4 other wing part numbers with similar dimensions used by GM with a different finish. If you want the complete engineering spec. with diagram send me an email.

[David B.]

Re: Identifying an original 1967 air cleaner wing nut

Brad,
No mystery, Every nut, bolt, washer, wing nut etc. installed on a GM car will have a part number or ID number. The standard for these numbers quality, size etc is established by GM Engineering Materials and processes Standards. If you can provide a part #, somewhere it's dimensions etc. should be listed in GM files. Engineering Standards was/is responsible for providing this information. They used to publish a multitude of thick volumes for all fasteners used on any GM car. With the advent of the computer I doubt they are published anymore. As a "mature" member I have a set of older volumes.

[David L.]

Re: Identifying an original 1967 air cleaner wing nut

Below is a link about the older 117204 wing nut.

Dave

https://www.forums.ncrs.org/showthre...ht=chrome+wing

[Paul O.]

Re: Identifying an original 1967 air cleaner wing nut

Here is the diagram.

[Keith B.]

Re: Identifying an original 1967 air cleaner wing nut

Here is the diagram.

according to this drawing and my trusty mics this wing nut


meets the tolerance to a .100 of a inch. and it was deemed incorrect

[Patrick H.]

Re: Identifying an original 1967 air cleaner wing nut

according to this drawing and my trusty mics this wing nut meets the tolerance to a .100 of a inch. and it was deemed incorrect

Keith,

0.1 (tenth of an inch) is quite a bit.
Post a photo of yours from the top if possible.

Patrick

[Tracy C.]

Re: Identifying an original 1967 air cleaner wing nut

according to this drawing and my trusty mics this wing nut


meets the tolerance to a .100 of a inch. and it was deemed incorrect

What was the deduct for the wing nut Keith?

There are only 5 originality points on the line with 4 items listed (Attachment, labels, hoses & clamps) The wingnut should be part of the "attachment" So there should really only be 1 point max assigned to the originality of the wingnut. Now keep in mind that 1 point is divided into 5 parts. Configuration, Date, Completeness, Installation and Finish.

If a judge wanted to deduct anything the only thing I see as a possibility is the "Configuration" element or .2 points.

tc

[Keith B.]

Re: Identifying an original 1967 air cleaner wing nut

It was a one point deduction. And I should have posted its within .001 of a inch of that drawing

[David B.]

Re: Identifying an original 1967 air cleaner wing nut

Keith,
Suggest you take a copy of GM drawing the next time you have car judged. Based upon what I see in this thread there appears to be a lot of confusion on this item. If the GM print is questioned there is a much bigger issue to address.