I am wanting to use stainless bolts to bolt my 6 pack on the charger 440
Do they make a stainless bolt with a captive washer sorta like the orignal seat?
The reason is I can't stand a rusty bolt on a nice motor
Right off I don't the size. Thread count or the length they need to be

I've run stainless socket (Allen ) head bolts on my aluminum intake engines for over20 years.

No captive washers though.

I was hoping for either a bolt with a captive washer or. A head with a wide shoulder (like a washer?)
Would also like to use them to bolt the carbs on

The intake bolts do require use of a washer. Use a separate washer (hardened washer if you can get them in stainless). Also, the bolts were known to back off and create intake leaks because of differential expansion between the aluminum intake and the steel bolts. The fix was a gasket on each side of the intake pan gasket (2 paper gaskets to sandwich the pan between the intake and the heads on each side).

ARP is going to be my first suggestion, they do make ss shoulder bolt style or reduced head 12pt. Whats the problem with a SS washer? A true captive washer in SS would be a little problematic in regards to galling issues I suspect.

Just keep in mind most stainless bolts are softer and more prone to breakage so don't over torque them

I have the black ARP bolts and really like them. They are bullnosed so they start easily and have washers included.

For carbs I would use studs.

I second this. I used to use stainless bolts on my carb until one the throttle started sticking wide open. The weirdest damn thing I ever had happen to me in the hobby. Full throttle blasts and the butterflies would stick. Turned out to be the torque was uneven on all four corners and the carb body was tweaked. Switched back to studs after that.