Hello everyone Sorry for my bad English.I'm a lamp friend from Germany. I have a ragge to the Primus 1381 kerosene lamp. What kind of thread does the nozzle have? I would have to rework the thread. Thanks for your help. Michael
Primus does not use a standard thread. This thread is 7 mm diameter but has 28 threads per inch with a Whitworth profile. The 1381 should actually be for alcohol, but many have been converted 'back' to kerosene by changing the jet and needle and removing the restrictor in the air intake tube.