48 C.F.R. §§ 3046.790-2
As used in this part:
At no additional cost to the Government means without an increase in price for firm-fixed-price contracts, without an increase in target or ceiling price for fixed-price incentive contracts (see (FAR) 48 CFR 46.707 ).
Defect means any condition or characteristic in any supplies or services furnished by the contractor under the contract that is not in compliance with the requirements of the contract.
Design and manufacturing requirement means structural and engineering plans and manufacturing particulars, including precise measurements, tolerances, materials and finished product tests for the major system being produced.
Performance requirements means the operating capabilities, maintenance, and reliability characteristics of a system that are determined to be necessary for it to fulfill the requirement for which the system is designed.
48 C.F.R. §§3046.790-2