1960 Oil Filter Cannister Bolt

[Joe M.]

I don't know if my cannister is original or not. The hex head bolt does not have any marking on it. I searched all archives and am searching the Restorer CD; 1958-1960 Judging Guide is silent on it. I can find no reference to a manufacturer's mark on the end.

Since the Judging Guide is silent, I suppose it doesn't matter; just curious.

What is the consensus of C1 owners?

[Thomas H.]

Re: 1960 Oil Filter Cannister Bolt

Joe,

I don't believe my original has any head markings on it, but the GM reproduction part I have on the car has a concentric circle on the head.

I'll double check when I get home.

Tom

[Joe M.]

Re: 1960 Oil Filter Cannister Bolt

I shipped the cannister off to Ken Hansen for restoration today. He informed me on Monday that it should have an "M" on it and that is what the restored unit will have.

If I get enough consensus that the bolt head has no marking, I will ask him to use the existing bolt.

[Bill M.]

Re: 1960 Oil Filter Cannister Bolt

No mark on my Dec. 58-assembled '59.

[Joe L.]

Re: 1960 Oil Filter Cannister Bolt

I shipped the cannister off to Ken Hansen for restoration today. He informed me on Monday that it should have an "M" on it and that is what the restored unit will have.

If I get enough consensus that the bolt head has no marking, I will ask him to use the existing bolt.

Joe------

Just imagine how many of these bolts GM was using in the 50's and early 60's given that they were used across all car and truck lines. I'd say there were likely numerous suppliers. The thing I can't figure out is how one (or more) of them got away without a manufacturer's ID mark.

[David L.]

Re: 1960 Oil Filter Cannister Bolt

According to my notes I have 3 canisters stored at my camp with "AP" on the bolt. I also have (or I may have sold it) a NOS canister without any marking on the bolt.

Dave

[Thomas H.]

Re: 1960 Oil Filter Cannister Bolt

Joe,

Pics of my original canister. No head marking on this unit.

Tom

[Joe M.]

Re: 1960 Oil Filter Cannister Bolt

Thomas, that is exactly the way my bolt head looked (minus the rust). To your knowledge, your car was unrestored. I believe I have enough evidence to request that Ken not replace my bolt. Thank you for the photos. Your photobucket site is awesome!

[Joe L.]

Re: 1960 Oil Filter Cannister Bolt

Joe,

Pics of my original canister. No head marking on this unit.

Tom

Tom------


If that "rounded" head configuration is common to all of the bolts that have no headmarking, it may be that feature constitutes a manufacturer's ID mark. However, it seems to me that the no-headmarking oil filter canister bolts I've seen just have a smooth, non-marked or featured surface.

[Bill M.]

Re: 1960 Oil Filter Cannister Bolt

If that "rounded" head configuration is common to all of the bolts that have no headmarking, it may be that feature constitutes a manufacturer's ID mark. However, it seems to me that the no-headmarking oil filter canister bolts I've seen just have a smooth, non-marked or featured surface.

Here's another:

[Joe M.]

Re: 1960 Oil Filter Cannister Bolt

Bill, is there a large washer under your bolt head as shown in Thomas' photo? My bolt had nothing visible underneath it, but I know it was supposed to.

[Bill M.]

Re: 1960 Oil Filter Cannister Bolt

Bill, is there a large washer under your bolt head as shown in Thomas' photo? My bolt had nothing visible underneath it, but I know it was supposed to.

Yeah, Joe:

There's a copper washer under the head. You can see it in the picture. It is squished onto the bolt so it isn't loose anymore.

The big washer in Thomas' photo is attached to the cannister. You can see that one in my picture too.

Bill

[Joe M.]

Re: 1960 Oil Filter Cannister Bolt

I am leaning toward instructing Ken Hansen to reuse my bolt and not worry about whether it should have an AP or M. Since the judges guide is silent on the bolt, I am not going to worry about it.

Thanks to all for photos and info.

[Ronald L.]

Re: 1960 Oil Filter Cannister Bolt

Guys, what you are dealing with are the early ones with the button head.

I think the general knowledge of those that don't use this forum is consistent with this and I'll add in that the AP head mark was seen generally towards 66-7 at the end of this style of oil filtration.

In any given year AC SP might have had one or two or one principal supplier with a back up, not ten at the same time so what you are seeing 40 - 55 years later is no longer a trend over the model years because....of the buying, selling and reproductions (cross swapping essentially) entering the mix of what we see on very original cars.

[Joe R.]

Re: 1960 Oil Filter Cannister Bolt

I'm going to have to agree with Joe about the head marks. I have canisters with "AP", "TR", "M", and a few plain bolt heads. The reason the judging manual left off the headmark is because they didn't want to be so friggin "anal" about something that could not be nailed down!

It seems apparent to anyone that there were MANY suppliers during the model years when these canisters were used.

And YES I know your car is totally original so that means that the head mark you have surely is specific to the year Corvette you own.

I also am selling "Beachfront Property In Arizona"! Any takers?

JR