"Bob Olds" wrote in message m...
I think you will find the nico-press sleeves for aircraft are STEEL,not aluminum.

\I think you'll find that they come in:
Stainless steel
Copper, tin plated copper, and zinc plated copper.
and Aluminum.

The stainless ones are not that commonly used by homebuilders. They
require a lot of pressure to crimp and only used on stainless cables. Most
people use the copper-alloy/plated ones as appropriate for the cable
\