U.S.C. chapta 6'7). (5) 52-779-51, Excaption fib Application of the Service Contract Labor Standards to Contracts for Maintenance, Calibration, or Repair of Certain Equipment—Requirements (May 2014) (41 U.S.C. chapter 67). (6) 57 779-53, &caption fro Application of the Service Contract Labor Standards to Contracts for Certain Services