It does show a cylinder head washer that goes under the bolt. List brake washer
I am currently exploring options for newer washers and would like to learn about aftermarket alternatives or superior washers that might be more affordable than those available at the dealership.
It is a 10mm on the shaft or bottom of bolt head
11mm on the threads
Washer reads 11.45mm
Here are some head bolts from a Big Block 454. Sizes are very similar, so I am going to try to use washer for them.
11.14MM on the bolt shaft or bottom of bolt head
11.20MM
Dont forget to install the new seal caps