Searched for this too many times, for me, and others
380 Factory Alloy Captured Washer Wheel nuts

The nut is a NN362C
and according to this PDF is the same for 380, magna (2nd and all 3rd Gen) and CJ lancer Factory alloy wheels.... @ a wreckers they can also be found on Mirage, nimbus, challenger and outlander in certain years...
https://www.niceproducts.com.au/catal...Mitsubishi.pdf