Valley-Todeco in Sylmar won a $472,875 contract...

Valley-Todeco in Sylmar won a $472,875 contract from Tinker Air Force Base in Oklahoma for engineering services.

* Sea Pac Construction of Reseda won a $457,825 contract from the Army for Big Tujunga Canyon Wash Bank protection.

* Datron/Transco Inc. of Simi Valley won a $379,706 contract from Robins Air Force Base in Georgia for antennas.

* Mason Electric Co. Inc. of San Fernando won a $321,849 contract from Tinker Air Force Base in Oklahoma for control grip assemblies.

* Litton Systems Inc. of Woodland Hills won a $118,000 contract from Tinker Air Force Base in Oklahoma for ring laser gyros.

* Brown & Brown of Woodland Hills won a $99,751 contract from the Postal Service in Denver for new construction lease in Carlin, Nev.

* PSI Bearing in Simi Valley won a $94,603 contract from the Defense Supply Center in Columbus, Ohio, for mechanical power transmission equipment.

* Whittaker Corp. of North Hollywood won a $75,465 contract from the Defense General Supply Center in Richmond, Va., for fuel valve slides.

* Special-T Fasteners Inc. of Chatsworth won a $74,745 contract from the Defense Industrial Supply Center in Philadelphia for internal wrenching bolts.

* Wesco Aircraft Hardware Corp. of Valencia won a $71,280 contract from the Defense Industrial Supply Center in Philadelphia for turnlock fastener studs.

* Avibank Manufacturing Inc. of Burbank won a $57,322 contract from the Defense Industrial Supply Center in Philadelphia for expanding grip pins.

* ITT Fluid Technology Corp. of Valencia won a $48,299 contract from Robins Air Force Base in Georgia for valves.

* Tavco Inc. of Chatsworth won a $44,400 contract from the Defense Supply Center in Columbus, Ohio, for pneumatic accumulators.

* Allied-Signal Inc. of Burbank won a $43,408 contract from Tinker Air Force Base in Oklahoma for engineering services.

* Hydraulics International Inc. of Chatsworth won a $42,786 contract from the Defense Supply Center in Columbus, Ohio, for quick disconnect coupling halves.

* Senior Flexonics Inc. of Burbank won two contracts from the Defense General Supply Center in Richmond, Va., one of $37,582 for air duct assemblies and one of $27,760 for air tube assemblies.

* Aero Engineering and Manufacturing Co. in Valencia won a $35,662 contract from the Defense General Supply Center in Richmond, Va., for aircraft and airframe structural components.

* Standard Armament Inc. of Glendale won a $35,400 contract from the Defense Supply Center in Columbus, Ohio, for weapons.

* Crissair Inc. of Palmdale won a $28,600 contract from the Defense Supply Center in Columbus, Ohio, for valves.