The Stovebolt Site Forums The Shop Area Engine Shop Bolt Referrence

Probably been asked 100 times - but is there an easy way to find the bolt size by the part number?

example: Bolt 106329
lw 103321

it would be nice if there was a cross reference somewhere.

you'd likely be able to find at least some in the master parts books, otherwise no overall reference

Bill

While this is GMC and does not have parts numbers many have found Larry's list to be quite helpful as Chevy and GMC are similar.


http://www.laroke.com/larryk4674/2005/bbpartshp2.htm

Ya what I was hoping for is something that tells me a 106329 is a 5/6 x 1 in course thread

BSCowboy - I searched in my usual places, but did not find a description of your bolt #106329. However, here are some sources for future fastener searches ...

PARTS NUMBER SOURCES:

Descriptions of fastener numbers is pretty frustrating. I don't know of a totally accurate source of descriptions for GM numbers. I use a number of sources and searches to find info. If all else fails - as Achipmunk says, use what fits.

Many of the GM part numbers are industry standard numbers. Websites of hardware suppliers to the Government often show the description. I sometimes find info on the item by doing a Google search of the part number and a brief description such as "bolt 3701135" for the outer bolts in the front engine mount of my '54 3100. Or, "washer 352282" for the middle washer on my '54 front engine mount.
Here is one of the "washer 352282" hits that gave me thickness info available nowhere else ...
http://www.wbparts.com/rfq/5310-00-447-2493.html
and info on "washer 365685", the end washer on the front motor mount at the same site ...
http://www.wbparts.com/nsndetail.cfm?NIIN=004496420&pn=365685
Try the site to search for other part numbers. I found your #106329 mentioned on a gov site as part of a Chevrolet Transmission Assembly, but no description of the bolt.

BillyBob - may not be 100% accurate for concours judging, but this list may be the best source available and they have been provent to work.
http://www.laroke.com/larryk4674/2005/bbpartshp2.htm

Here is a community Google Docs spreadsheet that I started (and did not complete) based data supplied by Larry Kephart and BillyBob and on info in the Factory Assembly Manual. I believe that you have to sign up for Google Docs (free) to view it.
https://docs.google.com/spreadsheet/ccc?key=0AuWjRxoWPR74dFlPNWFzWUJoMFRnMXNiMWhHMmI4cVE#gid=0

SOME OTHER LISTS:

Stock Corvair Group
http://stock.corvair.org/wpmu/blog/2011/11/gm-fasteners-table/

Plymouth: The First Decade
http://www.ply33.com/parts/group18

GMPartsWiki is also a good source. It has been posted by Stovebolters before.
http://www.gmpartswiki.com/query

The MPC has standard hardware items, but only a few of the numbers match the numbers in the Assembly Manual.
> Standard Parts Listing 1929 - 1954
8.899
p.473 - p.482
http://chevy.oldcarmanualproject.com/1929_54chevyparts/08/473.HTM
> Standard Parts Listing 1929 - 1957
8.899
p.641 - p.652
http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0641.htm
Also, illustration indexes in the Master parts Catalogs ...
> Illustration Index 1929 - 1954 MPC
http://chevy.oldcarmanualproject.com/1929_54chevyparts/info/039.HTM
> Illustration Index 1929 - 1957 MPC
Primarily '49 - '57
http://chevy.oldcarmanualproject.com/1929_57chevyparts/57cmpc0055.htm

The hardware item and dimentions are sometimes shown in the MPC section for the item that it attaches to, such as this listing for Group #0.002.
http://chevy.oldcarmanualproject.com/1929_54chevyparts/00/093.HTM

Here are abbreviations used in the MPC that may help define the type of fastner
http://chevy.oldcarmanualproject.com/1929_54chevyparts/info/005.HTM

Please post the source if you find an answer to your quest.

thankfully I have an Ace Hardware that has a whole isle of bolts and nuts just 1/2 mile away.

When I pull up they say " Here comes the nut and bolt guy again"

I just hate buying a 5/8 x 16 x 1 inch bolt only to get home and find I needed a 5/8 X 24 X 1

Somewhere in sometown is a guy hoarding all the references to what a chevy 106329, 100133 etc bolts are...pages and pages of the same stuff...laughing at us all drinkin canadian beer.

AFAIK there is no hidden code of bolt data contained in the part number - there's no way to determine what it is without actually finding it in a long, long list.
Note; the "Group" numbers identify the purpose (function) of the part in question, not the part itself. There is no individual data or dimensions. A single group number covers every part ever made for that purpose, regardless of size, thread, age, etc. Group 0.269 includes every 216, 235 & 261 cylinder head 1937-63, even though they are not always interchangeable.

I am having a heck of a time finding what the 106329 bolt really is. This is the Stomp Bracket that bolts onto the clutch housing.

Seems of the 4 bolts one is differentr and that is the easy one

The other three are 3/8 something - I have tried just about everything. I can crank a 3/8 x 16 x 1 inch in there - but I rather not.

Cowboy, unless you have some bolts laying around just go to the hardware and get you some 5/16, 3/8, ect and have them on hand. Oh and by the way get a couple that have different thread such as 13 tpi or 16tpi
As some previous owner may have used what he had and "made it work" you just never know. I also keep the air hose handy to blow out the holes and also the tap and die set so that once I determine the size I can "clean out" the threads......gosh, don't we love it!!

...one thing I have used a LOT on my restorations is the little plastic "guage" you can get at most places, northern tool, lowes, harbor freight. You can check a bolt or screw for the threads per inch or the actual size. I think they now cost about $3 bucks and well worth it.

IF you have an ace hardware close by its pretty cheap to just buy a box of 50 as it is a few...... and a helluva lot cheaper than buying them at lowes!!!

Yup I tapped the threads out and cranked in some 3/8 16's

The truck has been sitting in storage apart for almost 20 years now - so I guess I cannot expect these vacant holes to be smooth like a 2008 engine

The thing is starting to have a heartbeat now that I am the owner - out there day and night gettin R Done

Oh and I have a bunch of SS hardware on hand for a bunch of body stuff - on the engine and cast iron I like to use the grade 8 bolts.

Hy BSCowboy, p/n 106329 is a 3/8"-16 X 5/8", hope that helps