Spare Tire J Hook & Wing Nut

[cook_dw]

Ok everyone I need some help from some of you guys that know you have the original spare tire, J hook & wing nut.

AIM part numbers

1967 & 68 coupe - 3916608
1967 & 68 conv   - 3841841
1969 coupe         - 3949607
1969 conv           - 3841841

1967 w/ r defrost C50 - Nothing Listed
1968 w/ r defrost C50 - 3823276
1969 w/ r defrost C50 - Nothing Listed


Please do the data as follows please

Year - 68
Plant - NOR
Build Date - 03D
J Bolt Length - 9.5”
Rear Defroster - No
Wing Nut serrated or smooth - Smooth
Wheel Size - 14x6
Wheel code - FC


Photos are encouraged.  Thanks I’m advance!

[169INDY]

Year - 68
Plant - LOS
Build Date - 12E
J Bolt Length - 7” (Looks hack sawed?)
Rear Defroster - No
Wing Nut serrated or smooth - Serrated
Wheel Size - 14x6
Wheel code - XG (K17 /   11<O>30  XG)

[cook_dw]

Thanks Jim.

[x66 714]

Year-1968
Plant- Los
Build date-02E
J bolt length 7-1/4"
Rear defog- No
Wing nut serrated- No
Wheel size- 15x6
Wheel code- DF

[x66 714]

Year- 1969
Plant- Nor
Build date- 08E 1969
J bolt length- 9-1/2"
Rear defog- No
Wing nut serrated- I think so
Wheel size- 14x7
Wheel code- XT

[68camaroz28]

Joe, your 69 wing nut is one I've seen before with that much greater ear angle.
This is Skip's 69 Z/28 info.
Year- 1969
Plant- Nor
Build date- 09D Late
J bolt length- 9-1/2"
Rear defog- No
Wing nut serrated- Yes (has those teeth like manufacturing marks on the underside)
Wing nut wide angle or slight angle- Slight
Wheel size- 15X7
Wheel code- YH

[cook_dw]

Great info gentlemen & keep it coming!  I will add some additional check mark items later on once I actually start the spreadsheet. 

[68camaroz28]

Picture of what calling slight angle vs. Joe's 69SS with greater ear angle.
The tooling teeth like marks are on the underside or what Darrell called serrations, whereas picture shows top side and correct sq nut.

[mgreenz]

I'm confident that the spare, j-hook and wing nut are original to my car. There's a photo including the spare attached for your review.


Year - 68[/size]Plant - LOSBuild Date - 04DJ Bolt Length - 7.375”Rear Defroster - NoWing Nut serrated or smooth - SmoothWheel Size - 14x6Wheel code - FC

[mgreenz]

Year - 68
Plant - LOS
Build Date - 04D
J Bolt Length - 7.375"
Rear Defroster - No
Wing Nut Serrated or Smooth - Smooth
Wheel Size - 14x6
Wheel Code - FC

[cook_dw]

Thank you Terry.

Ok Ive threw together a down a dirty spreadsheet and I'd like to update the listing as to what we need to include.  Thanks Chick for the input also.


Year -                68
Build Date -      03D
Plant -             NOR
J Bolt Length -  9.5"
Engine Code -   L78
Rear Defrost -    No
Wheel Code -     FC
Wheel Size -    14x6
Wing Nut Face - Flat (or Conical reference Joe's & Chick's photos above)
Wing Nut Mating Surface - Smooth (or Serrated reference Joe's & Chicks's photos above)
Wing Nut Angle - Shallow (Or Steep)

[68camaroz28]

Year - 68
Plant - LOS
Build Date - 04D
J Bolt Length - 7.375"
Rear Defroster - No
Wing Nut Serrated or Smooth - Smooth
Wheel Size - 14x6
Wheel Code - FC

Terry, looking at your wing nut it appears you might have the indents around the circumference of the hole that is underneath or mating surface Darrell is calling serrated.
Here is what Darrell is calling serrated, the indents or tooling teeth marks of some kind. This is off the above 69Z late 09D NOR car.

[mgreenz]

Thanks Chick. Hopefully these photos are better. I believe my wing nut is the same as the one in Reply #3 with only the 4 dimples (spot welds?) on the mating surface.
I'm happy to email photos if you or Darrell would like them.

Year - 68
Plant - LOS
Build Date - 04D
J Bolt Length - 7.375"
Rear Defroster - No
Wing Nut Serrated or Smooth - Smooth
Wheel Size - 14x6
Wheel Code - FC

Wing Nut Face - Flat
Wing Nut Mating Surface - Smooth
Wing Nut Angle - Shallow

[cook_dw]

Those photos work. Thank you.

[cook_dw]

Would like more info from anyone and everyone with their original spare components.  All years 67 - 69.  Thanks!

[samz]

Year-69
Plant- Norwood
Build Date- 10E
J bolt length- 9.5"
Rear defroster- None
Wing Nut- Serrated/Stamped
Wheel -15 x 7
Wheel code- YH

[DCL70SS]

Attached are 3 photos and my drawing of a 1969 Camaro Coupe J-Bolt & Wingnut, GM # 3949607 & GM # 9785616. The wing nut has 8 "dimples" on the bottom side. This was with a 1969 Camaro bumper jack, 32 1/4"long, stamped "UN" on the jacking mechanism, and dated "9A" (1969, Jan.) on the rivet head that I bought at a salvage yard in Pepperell, MA back in the 1990's. I have many other J-bolts that I am doing research on.
Dave

[DCL70SS]

Attached in the 1st photo is what I believe to be a 1967-1968 Camaro Spare Tire J-bolt that I purchased at a swap meet decades ago based on what I have seen in this "Spare Tire J Hook & Wing Nut" thread.
The overall length measures 7 3/8" long. My question is it for the Coupe or the Convertible?.

The 1967 & 1968 Camaro Assembly Manuals list the J-Bolt part number as 3916608 on UPC 10, Sheet A2 for the COUPE models.  The REVISION RECORD in the 1967 Camaro Assembly Manual shows that on 11-29-66 "3916608 WAS 3893897".  My 1967 Corvair-Chevy II- Chevelle-Camaro Parts Catalog (Oct. 1966) lists GM # 3893897 in Gr. 7.632 as the Wheel Carrier Clamp BOLT for "67 CAMARO (CPE.)".  My 1968 Corvair-Chevy II- Chevelle-Camaro Parts Catalog (July 1968) lists GM # 3893897 in Gr. 7.632 as the Wheel Carrier Clamp BOLT for "67-68 CAMARO (SPT. CPE.)".

The 1967 & 1968 Camaro Assembly Manuals list the J-Bolt part number as 3841841 on UPC 10, Sheet A2 for the CONV. models.  The REVISION RECORD in the 1967 Camaro Assembly Manual shows that on 11-29-66 "3841841 WAS 3823275".  My 1967 Corvair-Chevy II- Chevelle-Camaro Parts Catalog (Oct. 1966) does not list a part number for the 67 Camaro CONV. model J-Bolt.   My 1968 Corvair-Chevy II- Chevelle-Camaro Parts Catalog (July 1968) lists GM # 3929975 in Gr. 7.632 as the Wheel Carrier Clamp BOLT for "68 CAMARO (CONV.)".

According to my Chevrolet Parts History Manual (Jan. 1965 - July 1973 - June 1975, for service parts sold over the counter) GM # 3916608 was replaced by GM # 488243 in May 1975.

According to my GM Parts History Manual (Jan. 1973 - June 1975, for service parts sold over the counter) GM # 3841841 was replaced by GM # 488243 in May 1975.

Oldsmobile Obsolete has a NOS 488243 J-bolt and it is listed as 5/16"-18 X 6" O.L. as shown in the 2nd photo. My 1974 Chevrolet Parts Catalog (July 1974) lists GM # 488243 as the Wheel Carrier BOLT for the 74 Camaro (exc. space saver site).

Does anyone has a photo and dimension of a 3841841 or 3929975 J-Bolt for the 67 & 68 convertible models?
Dave

[cook_dw]

Thank you for adding the info.  At this point in my data collecting I do not want to assume anything as being one vs the other.  I am hoping eventually we will have enough info and data points to confirm what you and I both believe on which one is for which application but for now I want the data to tell me.  But yes a convertible cars original jack J hook would be helpful as well as any C50 (rear defrost) equipped car's hook.

[DCL70SS]

I never noticed UPC C50, Sheet A2, in my 1968 Camaro Assembly Manual. The j-bolt is listed as GM # 3823275.
Thanks for the update.

BTW,
I just noticed that the 488243 J-bolt is also listed in the top parts of Gr. 7.632 in my 1974 Chevrolet Parts Catalog (July 1974) along with a description:
73-74 Pass. (exc. Sta. Wag.)
73-74 Nova (2 Dr.)(exc. Hatchback)
73-75 Chevelle (exc. El Camino)
It has the following description: "clamp (5/16"-18 X 7" O.L.).

The does not agree with the Oldsmobile Obsolete site for the NOS 488243 J-bolt which list it at 5/16"-18 X 6" O.L.

My 1973 Pontic Parts Catalog (Nov. 1972) lists GM # 488243 for "71-73 All F" (Firebirds) and "BOLT (w/space saver tire)(7 1/2" long)".
I tend to believe the parts catalogs.

[JST69Z28]

See 2 photos from what I believe are original jack parts on my 69 Z28 07A car.