... .material:nickel plated brass 2.thread type:NPT1/2''-NPT6'' 3.high quality 4.free samples nickel plated brass lock nut Material:nickel ... plated brass,stainless steelTread type:M14*1.5~M72*2 ... harnesses, machine , instrumentation, telecommunication equipment, and automobiles etc. nickel plated brass lock nut