Failure finding fastener type, size, and finish.

[Richard K.]

Why am I always failing to find a fastener's type, size, and finish using the GM sources that I use. I'm most concerned about finding the finish, be it cad, phosphate, zinc phosphate, etc., which should be in the "Standard Parts Catalog".
I have these printed materials to help in my search:

1.) 1969 Corvette Assembly Manual
2.) 1953 - 1973 Corvette Parts Catalog (Group 8.000 ends at 8.873; fasteners are listed in the "Standard Parts Catalog". See below.)
3.) Chevrolet Standard Parts; Service and Maintenance Products. Groups 8.800, 8.899 thru 8.999 (identification numbers are effective 12/70, the manual was printed effective 6/71)

Here's an example:

The Assembly Instruction Manual, UPC 1, Asm. F20, item #12 = p.n. 9419663
The Assembly Instruction Manual, UPC 1, Asm. F20, item #16 = p.n. 9415163

The 1953 - 1973 Corvette Parts Catalog, Illustration 9-21P shows the same screws as items #14 & #17, and that both are part of Group 8.977. No part numbers are shown.

The Chevrolet Standard Parts Catalog does not show either screw listed in Group 8.977 !

Why do these fasteners not show up in the Standard Parts Catalog ? What am I doing wrong, or using incorrectly ? Or?

Thanks
Rich Kossum

[David L.]

Re: Failure finding fastener type, size, and finish.

Rich,

I have many vintage Chevrolet Parts Catalogs, Chevrolet and GM Parts History catalogs, and GM Standard Parts Catalogs. It is quite rare to find a part number for a fastener that appears in assembly manuals to be also in a Chevrolet Parts Catalog or a Standard Parts Catalog. My 1966 and 1969 Chevrolet parts catalogs have a "Standard Parts Section" (Group 8.899 to 8.991) but in most cases do not have fastener part numbers that are the same as the assembly manual. You are doing nothing wrong. It is just the way it is.

Dave

[Terry M.]

Re: Failure finding fastener type, size, and finish.

Why am I always failing to find a fastener's type, size, and finish using the GM sources that I use. I'm most concerned about finding the finish, be it cad, phosphate, zinc phosphate, etc., which should be in the "Standard Parts Catalog".
I have these printed materials to help in my search:

1.) 1969 Corvette Assembly Manual
2.) 1953 - 1973 Corvette Parts Catalog (Group 8.000 ends at 8.873; fasteners are listed in the "Standard Parts Catalog". See below.)
3.) Chevrolet Standard Parts; Service and Maintenance Products. Groups 8.800, 8.899 thru 8.999 (identification numbers are effective 12/70, the manual was printed effective 6/71)

Here's an example:

The Assembly Instruction Manual, UPC 1, Asm. F20, item #12 = p.n. 9419663
The Assembly Instruction Manual, UPC 1, Asm. F20, item #16 = p.n. 9415163

The 1953 - 1973 Corvette Parts Catalog, Illustration 9-21P shows the same screws as items #14 & #17, and that both are part of Group 8.977. No part numbers are shown.

The Chevrolet Standard Parts Catalog does not show either screw listed in Group 8.977 !

Why do these fasteners not show up in the Standard Parts Catalog ? What am I doing wrong, or using incorrectly ? Or?

Thanks
Rich Kossum

Some parts, Fasteners especially, are "assembly line only" this you will not find them in the Standard Parts Catalogs or other Over The Counter f(OTC) references.

[Ed S.]

Re: Failure finding fastener type, size, and finish.

Rich - try AMK Products - they have a lot of original fasteners in correct finishes - http://www.amkproducts.com/default.htm

9419663 is on page 71 of the AMK catalog - it takes a bit of time to figure out how the catalog is organized. If you don't find it let me know, I will try to talk you through it.

http://www.amkproducts.com/Catalog_PDF/74-91.pdf

9415163 is not in the AMK inventory but 9415162 is - page 78

http://www.amkproducts.com/Catalog_PDF/74-91.pdf

Hope this helps

[Gary C.]

Re: Failure finding fastener type, size, and finish.

FYI - GM Fasteners are listed in P&A 24 (parts books)

ebay listing for P&A 24 as an example: https://www.ebay.com/itm/69-70-71-72...ebqn:rk:1:pf:0

Gary
....

[David B.]

Re: Failure finding fastener type, size, and finish.

All fastener part numbers listed do show up in the GM Standard Parts Catalogs, you just do not have the complete version.
Every fastener that goes into building a GM product has an assigned part number. There are at least 3 large volumes (maybe more) each 2 1/2" thick listing the description of every single nut, bolt, screw, washer etc. whether used in production or service. Obviously it would not be practical to list all of these fasteners in the over the counter parts catalog.
When looking for a particular fastener description it is really important to provide a part number if possible, more then likely it can be found somewhere in uncle GM's files.
9419663 hexagon washer head tapping screw, size 8, threads per inch 18, length 1/2" finish phosphate coated
9415163 hexagon washer head tapping screw, size 8, threads per inch 18, length 5/8" finish cad or zinc
9415162 hexagon washer head tapping screw, size 10, threads per inch 16, length 3/8" finish cad or zinc

[Joe L.]

Re: Failure finding fastener type, size, and finish.

Why am I always failing to find a fastener's type, size, and finish using the GM sources that I use. I'm most concerned about finding the finish, be it cad, phosphate, zinc phosphate, etc., which should be in the "Standard Parts Catalog".
I have these printed materials to help in my search:

1.) 1969 Corvette Assembly Manual
2.) 1953 - 1973 Corvette Parts Catalog (Group 8.000 ends at 8.873; fasteners are listed in the "Standard Parts Catalog". See below.)
3.) Chevrolet Standard Parts; Service and Maintenance Products. Groups 8.800, 8.899 thru 8.999 (identification numbers are effective 12/70, the manual was printed effective 6/71)

Here's an example:

The Assembly Instruction Manual, UPC 1, Asm. F20, item #12 = p.n. 9419663
The Assembly Instruction Manual, UPC 1, Asm. F20, item #16 = p.n. 9415163

The 1953 - 1973 Corvette Parts Catalog, Illustration 9-21P shows the same screws as items #14 & #17, and that both are part of Group 8.977. No part numbers are shown.

The Chevrolet Standard Parts Catalog does not show either screw listed in Group 8.977 !

Why do these fasteners not show up in the Standard Parts Catalog ? What am I doing wrong, or using incorrectly ? Or?

Thanks
Rich Kossum

Rich-----


The VAST majority of fasteners used in PRODUCTION were never available from GM in SERVICE. Of course, every one had a GM part number but that does not mean that you could EVER obtain one from GM.

[Gary C.]

Re: Failure finding fastener type, size, and finish.

Dave,

Have tried for many moons to acquire a copy of the GM Standards 3 binder set with no luck.

Gary
....

[David B.]

Re: Failure finding fastener type, size, and finish.

Dave,

Have tried for many moons to acquire a copy of the GM Standards 3 binder set with no luck.

Gary
....

Good luck on that one Gary. I think they stopped printing those when the computer came into use. Never realized how important they were until restorations came of age and became so precise. Still owe you a response via email, do not despair!

[Richard K.]