anyone know where I can buy M6 black nylon / plastic washers from. Local nut / bolt place only has them in "natural" or "white".

thanks

if nylon 6.6 then you can buy a dye to dye white or clear ones if your really stuck.

the guy at the fastener place said something about dye so they should be OK. Where would I get the dye from or will normal clothes nylon dye from Woolworths do the job ?

No sure matey, try a google search first, we get stuff dyed all the time for work but its large volumes of stuff and obscure colours too but its all subcontracted out otherwise i would half inch you sone dye

try www.farnell.com www.rswww.com and maplin.co.uk