Section 242.1105 - Assignment of criticality designator(1) Contracting officers shall-(i) Assign criticality designator A to items with a priority 01, 02, 03, or 06 (if emergency supply of clothing) under DoD Manual 4140.01, Volume 5, DoD Supply Chain Materiel Management Procedures: Delivery of Materiel; and(ii) Ordinarily assign criticality designator C to unilateral purchase orders.(2) Only the contracting officer shall change the assigned designator.56 FR 36437, July 31, 1991, as amended at 67 FR 61516 , Oct. 1, 2002, 82 FR 61481 , Dec. 28, 2017