Litton Systems Inc.’s Guidance and Control Systems...

Litton Systems Inc.’s Guidance and Control Systems Division in Woodland Hills won a $3.51-million contract from Tinker Air Force Base in Oklahoma for engineering services.

* H.R. Textron Inc. of Valencia won a $1.3-million contract from the Navy in Philadelphia for unspecified, miscellaneous products.

* Orbas & Associates of Ventura won a $1.07-million contract from Vandenberg Air Force Base to repair a missile research facility building.

* Sergent’s Mechanical Systems Inc. of Oxnard won a $1.06-million contract from the Point Mugu Naval Air Weapons Station to repair barracks. Sergent’s also won a $975,500 contract from the Engineering Field Activity in San Bruno for architectural-engineering services for the Point Mugu base.

* American Construction Group Inc. of Lancaster won a $530,500 contract from the Army Corps of Engineers in Los Angeles to add a perimeter fence at March Air Force Base.

* Robert Bein, William Frost & Associates of Camarillo won a $500,000 contract from the Naval Air Weapons Station in Point Mugu for architectural-engineering services.

* Hydro-Aire Crane Co. of Burbank won a $499,860 contract from Hill Air Force Base in Utah for dual valve pressure transducer assemblies.

* Senior Flexonics Inc.’s Stainless Steel Products Division in Burbank won a $229,824 contract from the Defense General Supply Center in Richmond, Va., for bleed air duct assemblies, and a $127,850 contract for engine duct assemblies.

* Semco Instruments Inc. of Valencia won a $200,364 contract from the Army Aviation and Troop Command in St. Louis for heating thermocouples.

* C.K. Technologies Inc. of Newbury Park won a $176,800 contract from the Director of Contracting in Chambersburg, Pa., for a wire analyzer system.

* Waltom Construction Inc. of Ventura won a $167,550 contract from the Naval Air Weapons Station in Point Mugu for building alterations.

* Teledyne Camera Systems of Northridge won a $134,180 contract from the Navy in Philadelphia for television cameras.

* PSI Bearing of Simi Valley won a $126,000 contract from the Defense General Supply Center in Richmond, Va., for support rod assemblies.

* The Whittaker Controls Division in North Hollywood won a $113,784 contract from Kelly Air Force Base in Texas for directional sleeves and a $107,464 contract from the Defense Supply Center in Columbus, Ohio, for valves parts kits.

* Air Dry Corp. of America in Moorpark won a $102,517 contract from the Defense Supply Center in Columbus, Ohio, for cartridge check valves.