Sole Source Repair Schenck Balancing Machines Inactive 8(a) Sole Source (FAR 19.8) Notice ID:N3904022Q0222 Sole Source. Department/Ind.Agency Subtier Office DEPT OF DEFENSE DEPT OF THE NAVY PORTSMOUTH NAVAL SHIPYARD GF NAICS 811310 - Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance PSC MAINT-REP OF METALWORK MACHINE Data sourced from SAM.gov. View Official Posting »