48 CFR § 252.101
Using part 252
November 17, 2020
(b) Numbering.
(2) Provisions or clauses that supplement the FAR.
(ii)
(B) DFARS provisions or clauses use a four digit sequential number in the 7000 series, e.g., -7000, -7001, -7002. Department or agency supplemental provisions or clauses use four digit sequential numbers in the 9000 series.