QQ-T-390A (INTERIM AMENDMENT 1), FEDERAL SPECIFICATION: TIN ALLOY INGOTS AND CASTINGS AND LEAD ALLOY INGOTS AND CASTINGS (ANTIFRICTION METAL) FOR BEARING APPLICATIONS (21 JAN 1981) [S/S BY ASTM-B23]

QQ-T-390A (INTERIM AMENDMENT 1), FEDERAL SPECIFICATION: TIN ALLOY INGOTS AND CASTINGS AND LEAD ALLOY INGOTS AND CASTINGS (ANTIFRICTION METAL) FOR BEARING APPLICATIONS (21 JAN 1981) [S/S BY ASTM-B23]., This interim amendment was developed by the Department of the Navy, Naval Sea Systems Command, Washington, DC 20362, based upon currently available technical information. It is recommended that Federal agencies use it in procurement and forward recommendations for changes to the preparing activity at the address shown above. The General Services Administration has authorized the use of this interim amendment as a valid exception to Federal Specification QQ-T-390A, dated 17 April 1972.