* Special-T Fasteners Inc. of Chatsworth won...

* Special-T Fasteners Inc. of Chatsworth won a $481,705 contract from the Defense Supply Center in Columbus, Ohio, for corrosion resistant steel stud nuts.

* Castle Precision Industries of Sylmar won a $325,500 contract from the Naval Inventory Control Point in Philadelphia for landing drag braces.

* Senior Flexonics Inc. of Burbank won a $288,320 contract from the Defense General Supply Center in Richmond, Va., for duct assemblies and one of $188,568 for tee assemblies.

* Whittaker Controls Inc. of North Hollywood won a $159,320 contract from the Naval Inventory Control Point in Philadelphia for air valve assemblies.

* Mason Electric Co. of San Fernando won a $118,080 contract from the Defense General Supply Center in Richmond, Va., for aircraft controller grip assemblies; a $107,237 contract from Tinker Air Force Base in Oklahoma for grip assemblies, and contracts of $51,479 and $56,783 from the Naval Inventory Control Point in Philadelphia for aircraft components and accessories.

* Knurr USA Inc. of Simi Valley won an $81,311 contract from the Naval Command Control and Ocean Surveillance Center in Norfolk, Va., for console workstations.

* PTI Technologies Inc. of Newbury Park won a $66,737 contract from the Defense Supply Center in Columbus, Ohio, for fluid filters.

* Terabit Technology LLC of Oxnard won a $63,479 contract from the Army Research Office in Triangle Park, N.C., for the integration of optoelectronic circuits for control of MM-wave phased array antennas.

* Space-Lok Inc. of Burbank won a $47,625 contract from the Army Aviation and Troop Command in St. Louis for machine bolts.