Center cap bolts

[61K T/A]

I just bought 4 NOS Ralley center caps and I'm looking for the correct bolts. I found two different sizes and both sellers say they are correct. Who sells the Right self tapping machine screws? Thanks

[Cuda Cody]

Didn't the caps come with them?

Most of the resellers are getting fasteners from here:

https://www.amkproducts.com/bulk1.asp

You can buy directly from AMK, but they charge full price.  Lots of the resellers (like Dave at Roseville & RT Specialties) sell their stuff a slightly better price then buying directly from AMK.  I would check with Dave first and see what he has in stock.

[1 Wild R/T]

They should be 1/4-20 x 5/8" & they should have a 3/8" hex flange head

[Chryco Psycho]

Does Mopar still have them ?

[fc7cuda]

They should be 1/4-20 x 5/8" & they should have a 3/8" hex flange head

pic - http://www.rtspecialties.net/prodimages/large/6029190.jpg

item - http://www.rtspecialties.net/proddetail.asp?prod=6029190

kinda expensive. 

[1 Wild R/T]

They should be 1/4-20 x 5/8" & they should have a 3/8" hex flange head

pic - http://www.rtspecialties.net/prodimages/large/6029190.jpg

item - http://www.rtspecialties.net/proddetail.asp?prod=6029190

kinda expensive. 

These are close but not self tappers.. bolt of 50 $5.45...    https://www.mcmaster.com/#92979a114/=17cdu2p

[Chryco Psycho]

they look  correct

[cuda dad]

I found these http://www.ebay.com/itm/Mopar-Rallye-Rally-Wheel-Center-Cap-Correct-Screw-20-pc-Set-Cuda-Charger-Dart/381963375207?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D2%26asc%3D40130%26meid%3D8abf02555b884c4cb2bf2d1976e2b389%26pid%3D100005%26rk%3D1%26rkt%3D2%26sd%3D252893695071
Don't get these, they are the wrong head and pretty much just wrong.

[B5Cuda440-6]

On original unrestored cars, this is the bolt I've seen. I believe it's a 7/16" head bolt with a little "N" stamped into it, and also has a copper washer. Not sure about the threads or the bolt length off the top of my head. But 1/4-20 and 5/8" in length sounds correct.

Very hard to find in good condition.

[6bblgt]

I've seen the larger 7/16" head bolts, I wonder if they got introduced when the rallye wheels changed from 5 attaching bolts to 3?

[B5Cuda440-6]

Don't know. I had 1 390 rim with all 5 holding the cap on. My other caps had a mixture of the "N" bolts and aftermarket. I was able to get a set from another Mopar collector.

[6bblgt]

I did find a '70 center cap with the larger head bolts in my parts room -  maybe it was an assembly plant "thing"

[B5Cuda440-6]

I agree. Or maybe a scenario of multiple suppliers to the manufacturing plant??

[6bblgt]

@198D13  commented in another thread that the 7/16" head bolts are 1970-1972 model year and the 1973 & newer used the 3/8" head bolts from the factory