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