the set of wheel locks i got from trdsparks were Mcgard cone seat types. the stock lug nut has a flange at the end. when i got the locks a month ago i just put them on w/o thinking much about it until now. should i get some washers to go in between the wheel and the locks?

moved...

There are no instructions that say anything about using washers. Mine have been on for months without them. I think you're fine.

it's just that they look so much different since the stock nuts have a wide flange that presses wheel onto the hub i guess.

They do look different, but... well... the whole thing looks different. None of them truly have washers, so I'm not worried. Plus I don't think that the locks hold the wheel on as robustly as the other nuts - I just think of it as lock first, nut second.