1970 Challenger Grill Bolts - Washer Size and Finish

[doubleyellow]

The 8 exposed bolts (looking down in grill) holding the 1970 grill:

are the washers 9/16" or 3/4" dia? or both, depending on location?

Finish: Black phosphate, black paint, or other?

Thanks much

 

[doubleyellow]

Anybody can help here?

 

[dadeo1852]

Mine are phosphate, 9/16" dia.

 

[doubleyellow]

Thanks Dadeo

 

[B5BLUERT]

Yep looks like phosphate and 9/16

 

[doubleyellow]

Awesome. Thanks.

 

[Grady Cain]

Can also be .75" (see underlined sentence.) All of my originals had the .75" captive washers in those positions. Most of the aftermarket hardware I have seen come with the .562" washer but the bolt head height (E) is incorrect and the captive washers do not have the paint cutter points.

 

[doubleyellow]

That is why I asked. So the book shows the small dia washers, but I did still have the .75 dia washer "imprints" on my old grill (all my old bolts are mixed up). So when I got the grill kit from R/T specialties with mostly small paint cutter thread bolts (with .56 dia washers, and painted bolts, not phosphate) I got myself confused. Even back 30+ years I didn't remember the smaller bolts on my grill (or on another Challenger I had). Any other Challenger guys/girls please let me know what your grill bolts look like?