Id be interested as well. Ive got a veritas on the way (shipped today!) and I heard the insulator is the biggest point of failure.
Wouldnt mind having a few spares just in case...
If you have a clone Veritas, the non-PEEK insulator only becomes an issue when resistances below 0.4Ω are used, and... exceedingly long and repeated draws are done - in other words, buttloads of heat. Stay above 0.4Ω and don't take six 10 second draws in rapid succession... and you
should have no problems.
If you have a second run, authentic Veritas, they use a light-brownish PEEK nut
and resistances below 0.3Ω are not an issue at all.
You can get, Chemis made, metric PEEK nuts (the size for clones,
that I've encountered is M2.6X.45mm - verify
your screw/
thread size) from
SolidSpot... but you have to
buy a minimum of 100.