Today I needed to fix a 35 sq mm cable lug with a 10mm hole to a brass block. Current is something near the limit for 35mm cable. (Think car starter motor, it isn't but similar set up). My imediate thought was to use a brass screw and brass washer so current could pass through both faces of the lug via the stud. Then I thought that the torque I can put on a brass 10mm stud is minimal, whereas the torque I can apply to a 10mm steel stud is considerable before I sheer it. Steel won in the end as I had no brass 10mm studding or bolts but it would be interesting to know which way gives the long term lowest resistance. Any views?
AWEM