Rear tack strip bolt sizes

[rftroy]

What fasteners are used to attach the rear tack strips? Are they all 1/4-20 bolts?
Three are two types of bolts on my car that are clearly factory correct. Both are 1/4-20 x 1.5" with either a round or large rectangular washer.

There are 4 other holes that have a variety of 5/16-18 bolts (and one hole with the weld-nut missing). I recognize some of the 5/16 from other parts of the car.

Robert


Edited:
I can't find how to delete the post, but ignore the question. I had a duh moment and went out in the back 40 to my other convertible. All of the weld-nuts are intact and they are 1/4-20. Looks like I have some rivnut installation ahead.
So, am I correct in thinking that the two fasteners in the picture are the only two types used?
And, are they reproduced?

RT

 

[Dana67Dart]

Yes sort of. I'll get you a photo.

BTW what car. Barracuda and Dart are different.

And the year probably makes a difference too

67 Dart Convertible Top Replacement

Note that the bolts with the rectangular washers are in the sides only.

The ones with round washers on on the back only.

There are two (one on each side) that don't have washers and go through the smaller of the holes in the side strips

 

[rftroy]

Yes sort of. I'll get you a photo.

BTW what car. Barracuda and Dart are different.

And the year probably makes a difference too

67 Dart Convertible Top Replacement

Note that the bolts with the rectangular washers are in the sides only.

The ones with round washers on on the back only.

There are two (one on each side) that don't have washers and go through the smaller of the holes in the side strips

Thanks Dana. I've figured out a bit of that in the last few hours. It's disappointing that there is no picture (except for one generic one) in the service manuals. I could also find no listing for the tacking strips or the fasteners in the 68 book. However, I worked a parts counter at a Plymouth dealer in my youth and those books are notoriously hard to use.

It is a 68 Barracuda. The attached picture shows all the correct fasteners that I have. I didn't know about the screws in the two small holes on the sides. Glad you responded as I had put them in the pile to go into the spare bolts bin. Just as in your Dart pictures, they are sheet metal screws, although mine have captured washers.
I went back out to the other convertible and, oddly, but sure enough, there are no nuts at those locations. The screws thread into the sheet metal.

By my count, I need eight of the rectangular captured washer bolts, thirteen of the round capture washer bolts, and the two sheet metal screws.
Looks like I'm missing one rectangular and five round. Fortunately, AMK products makes the round washer screw in gold anodized form.

So now I have to find a rectangular washer screw. eBay? forums?

Robert

 

[rftroy]

Yes sort of. I'll get you a photo.

BTW what car. Barracuda and Dart are different.

And the year probably makes a difference too

67 Dart Convertible Top Replacement

Note that the bolts with the rectangular washers are in the sides only.

The ones with round washers on on the back only.

There are two (one on each side) that don't have washers and go through the smaller of the holes in the side strips

if you look closely at this picture from the 68 Plymouth manual, you could convince yourself that small bolt in the middle of the side is a machine screw thread. This picture also shows that the ends of the side strips have a large round thick washer under the bolts. Have you seen that?

 

[Dana67Dart]

You can get the gaskets at DMT.

Detroit Muscle Technologies, LLC Mopar & AMC muscle car restoration gaskets

Note the Dart and the Barracuda kits are not the same.
Note the DMT Barracuda Kit is missing one of the small square pieces in their photo.


Pass side

Pass corner

Across the back

Drivers rear corner

Drivers side

DMT Gasket set

 

[rftroy]

Thanks.

 

[Dana67Dart]

67 Barracuda Supplement, It shows all the bolts except the 2 side center being rectangular washer bolts!

This is for 67 Dart. The sides are all rectangular (except for the center on the sides) and the back are all round

looks like the image you posted in post #4 is for Coronet.