Well I believe that I finally found a compatible bolt/washer for the T10092. I have spent the last two or so weeks educating myself on bolts and washers... talk about OCD... anyway, with aid of Fastenal they had an M5x60mm allen head bolt and washer in stock; I bought the bolt and three washers which cost me $0.58 tax included.
I used these for a test to ensure that the bolt threads and washers (pic attached) were the right size; I was able to thread the bolt with my fingers, so it worked!
However there is no room to get an allen head wrench in so I ordered its 8mm hex head equivalent.
I ordered two different size 8mm Hex Head bolts, an M5x50mm (Fastenal P/N# 0121793 $0.24 each) and an M5x60mm (Fastenal P/N# 0122019 $ 0.27 each); also three washers for each (Fastenal P/N# 1133203 $0.14 each).
Fastenal did have an 8mm M5x55 bolt spec, but it is discontinued and cannot be ordered; I wonder why that is
I'll have pics of the other two bolts posted after I pick them up. The tool pics that I found on the internet are very deceptive, as I thought I was looking for a much larger bolt with really coarse threading. I was surprised how small this bolt/washer tool actually is.