TM    55-4920-428-13 Vendor Code Index (Continued) Code Vendor Name and Address 08779 Signal Transformer Co. Inwood,   N.Y. Standard   Supplies Santa  Ana,  CA 91407 Superior  Electric  Co. Bristol, CT 06010 01295 Texas  Instruments Dallas, TX 81205 The  Boeing  Co. Kent,  WA V82893 Vector Board Electric Co., Inc. Sylmar,  CA 12969 Unitrode  Corp. Watertown,  MA (2) Abbreviations are used to describe parts. Abbreviations used in the Detailed Parts List areas follows: ABBREVIATION DESCRIPTION ALT AC AFCS ASSY BKDN BLKHD CK CPLG DIA DIV FH FIG ILCA IN L NHA NPT OD PL Press PSI PSIG SAS SCH SERNO SOC STL TB U/O U/W W W/SEAL Actuator Alternate Alternating   Current Advanced Flight Control System Assembly Breakdown Bulkhead Check Coupling Diameter Division Flat  Head Figure Integrated  Lower  Control Inch Long Next  Higher  Assembly National  Taper  Pipe  Thread Outside  Diameter Plate Pressure Pounds Per Square Inch Pounds Per Square Inch, Gage Stability  Augmentation  System Socket  Head Serial  No. Socket Steel Terminal  Board Used  On Used  With Wall With  Seal Change   1 6-1 3