The metric QNM weld nut has four identical precision projections. They are positioned
and designed to fuse simultaneously so each projection flows and seats properly
for maximum weld strength. The four projections provide additional weld area coverage
with maximum strength.
The pilot on the QNM weld nut provides additional thread engagement and prevents
any possible shunting of the projections onto the threads. This eliminates the necessity
of retapping filled threads.