In Reply to Parent Post by R. Webb
Thanks for responding. The specification is:
Heat Treat 7075-0 to 7075-T6 Per SAE-AMS-2770
Para 22.214.171.124 Other Alloys or Other Tempers
Each lot of parts shall be hardness and conductivity tested. Testing shall be in accordance with 126.96.36.199.1 or 188.8.131.52.2
See those 2 paragraphs - specify on PO which one you want to apply (both request hardness testing).
Hardness results shall be as per AMS2658 (which I don't have).