I-0072:

1/4-20 dome cap, snaps on double washer

I-0345:

3/4 inch head, hex shape

I-0623:

Dome cap, snaps on double washer with 3.5 inch flange

I-0867:

2.75 inch O.D.
2 inch diameter washer
0.94” (5/8”) hex head bolt