Government-owned property must be marked, tagged, labeled or stamped using specific clauses within the Federal Acquisition Regulation (FAR), the Defense Federal Acquisition Regulation Supplement (DFARS) and the NASA FAR Supplement (NFS). This also covers grantees of Federal funding as spelled out in the Green Book
Federal Acquisition Regulation (FAR)
FAR 52.245-1(f)(1)(ii) — Identify as Government owned in a manner appropriate to the type of property (e.g., stamp, tag, mark, or other identification), and manage any discrepancies incident to shipment.
Defense Federal Acquisition Regulation Supplement (DFARS)
252.245–7001 (b) — The Contractor shall tag, label, or mark Government-furnished property items identified in the contract as subject to serialized item management (serially-managed items).
NASA FAR Supplement (NFS)
NFS 1852.245–74(b) — Equipment shall be marked in a location that will be human readable, without disassembly or movement of the equipment, when the items are placed in service unless such placement would have a deleterious effect on safety or on the item’s operation.
NFS 1852.245–74(c) — Concurrent with equipment delivery or transfer, the Contractor shall provide the following data in an electronic spreadsheet format: (2) Unique Identification Number (License Tag) and (4) An explanation of the data used to make the unique identification number.
Green Book Grantees
2 CFR Part 200.313 — Equipment: (d) Management requirements. (1) Property records must be maintained that include a description of the property, a serial number or other identification number…. (3) A control system must be developed to ensure adequate safeguards to prevent loss, damage, or theft of the property. Any loss, damage, or theft must be investigated.