075592010 - Stainless Steel Headbolt Nuts for ALL bevel drive twins. Precision Machined from solid stainless steel - these are NOT hardware store nuts, they are the same size and shape as original as you can see.
1 set comes with 8 nuts. You can choose to get the nuts alone or with wavy washers.
M10 x 1.5 thread, 16mm across the flats (wrench size), 12mm overall height as per originals.
Great product !! Dresses up the tops of the cylinder heads...
Just don't be cheap like me - get the wavy washer kit too. My rear cylinder head was missing one (had a flat washer instead, had to scrounge through my jars of grungy used nuts & bolts to find something usable but still a mixed set on there now...)