48 C.F.R. §§ 252.227-7026
As prescribed at 227.7103-8(a), use the following clause:
Deferred Delivery of Technical Data or Computer Software (APR 1988)
The Government shall have the right to require, at any time during the performance of this contract, within two (2) years after either acceptance of all items (other than data or computer software) to be delivered under this contract or termination of this contract, whichever is later, delivery of any technical data or computer software item identified in this contract as "deferred delivery" data or computer software. The obligation to furnish such technical data required to be prepared by a subcontractor and pertaining to an item obtained from him shall expire two (2) years after the date Contractor accepts the last delivery of that item from that subcontractor for use in performing this contract.
(End of clause)
48 C.F.R. §§252.227-7026