what sprocket said. I bought a NEW Honda OEM drain plug from HouseofHonda Parts.
check them first for parts. It is surprising how many OEM parts are still available, and at a reasonable price.
I also bought the gas tank mounting rubbers from them, the 2 front and one rear. Cheaper than e-bay has old worn hardened ones.
A lot of the weird hardware is available yet. I replaced the fork pinch bolts, the fork top caps, the big nut on the stem on the top triple clamp.
While many parts are NLA, some are still available new and at good prices.
To keep shipping down, peruse HouseofHonda and find some other parts too.....