ive got my click torque wrenches and they are necessary, plus this adaptor is awesome and makes getting the right torque too easy to NOT do it.
I have the 3/8 and the 1/2:
https://www.amazon.com/ACDelco-ARM602-4-Digital-Adapter-4-147-6/dp/B004VYURT0
I have forgotten the crush washers many times, never and issue.