NASAAC Meaning:
In commodity market terminology, NASAAC is an acronym for the North American Special Aluminum Alloy Contract. NASAACs are traded on the London Metals Exchange or LME.

NASAACs are for 20 tons of Aluminum Alloy conforming to the “LME NA380.1” specification with a tolerance of +/- 2%. Contracts are quoted in U.S. Dollars per pound, although Yen, Sterling and Euro are also clearable currencies.