Section 1825.1101 - Acquisition of supplies(c)(1) NASA has determined that the restrictions of the Buy American Act are not applicable to U.S.-made end products.(e) The contracting officer must add paragraph (k) as set forth in 1852.225-8, Duty-Free Entry of Space Articles, in solicitations and contracts when the supplies that will be accorded duty-free entry are identifiable before award. Insert the supplies determined in accordance with FAR subpart 25.9 and 1825.903. 65 FR 10031 , Feb. 25, 2000, as amended at 68 FR 11748 , Mar. 12, 2003