I walked out to the barn and measured all the hardware and ordered from Spruce. What I found comparing what I measured and what the book calls out is strange. If the book called for AN3-4A, I measured -7A. They were all that way, slightly longer. I may to go back out to take another look to see if the builder doubled up on washers. I was having a hard time in a dark barn with reading glasses trying to fall off my face with a ruler in one hand and a flashlight in the other. All I was interested in was grip length, didn't pay too much attention to the washers.
Jay