Technical Early GM Hardware

I am putting the front end of my 1941 Chevy Sedan back together and need help on what size bolts/screws these are. There are (2) on each fender top brace and about 12 on the chin piece. Pic below is an original screw, next to a 1/4 lag bolt. The lag is VERY close.

Thanks, VOH




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Does my question make sense? looks like a lot of looking, but no one has chimed in yet.

 

GM used those for many years. Look at Tri Five parts dealers. They should offer a sack full. Lots of time a clip nut was used also.

 

Thank you.

 

https://www.fastenersuperstore.com/...hIsv6zxjQxF84UQcKTVvV19-ALt_ZQaoaAsqJEALw_wcB

 

1/4" x 1" Square lag - Black Oxide (blacksmithsdepot.com)
1/4" x 1" Square lag - Black Oxide
IN STOCK
Square head lag bolts (100 pcs.)
Item # 277c
$0.30

 

This might have what you need........pictures don't show all of the small parts though
https://www.chevsofthe40s.com/dept/Fender/cat/Bolt+Kit.html

Studes used that style of fastener into the 50's and 60's, can't remember the thread count but you might check Fastenal or a like store for them.

 

See your in Texas. Call Jim Hawes in Kilgore . Classic Chevrolet Connection

 

The Filling Station in Lebanon, Oregon
800-841-6622

 

If you dont mind the bolts not having a square head then those lag bolts will work. I put together my 55 with lag bolts from tractor supply. Think they was $2 a pound.


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The threads are too rough for steel. They look like wood screws..

 

That's what I was thinkin too, Maybe someone put that screw in there when apart before? I think I would check with other guys who own old Chevys or that classic Chevy place mentioned by someone above.

 

I got this bag of hardware in a box of early Ford parts at an auction, same exact screws along with shims, washers, screw clips and some 1/4-20’s.

 

Thank you guys for your help.