Ground Strap Bolts for a 68 LOS car

[NAPA68]

Can someone provide me with a pic of what I am looking for in the for of the aforementioned fastener? These would be for the straps that run from the firewall to the valve cover.

In advance, thanks for your consideration!
Tim

[bertfam]

Lots of pictures HERE.

For the firewall, P/N 9420415 was a hex head zinc plated 1/4-14x5/8 screw.

AMK sells them HERE.

For the valve cover, it was part of the engine assembly.

Ed

[169INDY]

12D (LOS) Z28
Driver side