TM  5-2815-240-34&P B-7. ABBREVIATIONS. The abbreviations used in this appendix are common in trade practice and MIL-STD-12, Military Standard Abbreviations for use on Drawings, and in Specifications, Standards and Technical Documents. Abbreviation Explanation AAL ............................. AdditionalAuthorizationList AC  .............................. Alternating Current ACE ............................ Armored Combat Earthmover ADPTR  ....................... Adapter AMDF ......................... Army Master Data File AR  .............................. As Repaired ASSY .......................... Assembly BLK ............................. Black BII ............................... Basic Issue Items BOI ............................. Basis of Issue BRG  ........................... Bearing CAGEC ....................... Contractor and Government Entity Code CKT BKR .................... Circuit Breaker CL ............................... Class COIE  .......................... Components of End Item CONN ......................... Connector CTSK .......................... Countersunk DEG  ........................... Degree DIA  ............................. Diameter DS  .............................. Direct Support EA ............................... Each ELEC .......................... Electrical EXT  ............................ External F ................................. Forward FIG ............................. Figure FIL .............................. Fillister FILH  ........................... Fillister Head FL ............................... Flat FLH  ............................ Flat Head FT ............................... Foot GA .............................. Gage GND ........................... Ground GR .............................. Grade GS .............................. General Support H................................. High HD .............................. Head HD .............................. Hundred HDLS .......................... Headless HEX ............................ Hexagon HEX HD ...................... Hexagon Head ID ................................ Inside Diameter ILLUS  ......................... Illustration IN ................................ Inch INC ............................. Incorporated INTL  ........................... Internal L ................................. Low LB ............................... Pound LG  .............................. Length LH ............................... Left Hand LKWR ......................... Lock Wire LUB  ............................ Lubricate LVL ............................. Level MACH ......................... Machine MFD  ........................... Manufactured MIL  ............................. Military MS .............................. Military Standard MTG ........................... Mounting NIIN ............................ National Item Identification Number NO .............................. Number NOM ........................... Nominal NPN ............................ No Part Number NSN ............................ National Stock Number OD .............................. Outside Diameter ORG ........................... Organizational OVE ............................ On-VehicleEquipment OVS ............................ Oversize P/N  ............................. Part Number PG .............................. Package PSI .............................. Pounds per Square Inch QTY ............................ Quantity R................................. Reverse RBR ............................ Rubber RD .............................. Round RH .............................. Right Hand RLF  ............................ Relief RLR ............................ Roller RND  ........................... Round RPSTL ........................ Repair Parts and Special Tools List SAE  ............................ Society of Automotive Engineers SCH ............................ Socket head SKT  ............................ Socket SLTD .......................... Slotted SLVG .......................... Sleeving SMR  ........................... Source,Maintenance,andRecoverability SP ............................... Speed SPEC .......................... Specification SQ .............................. Square STD ............................ Standard STE/ICE ...................... Simplified Test Equipment for Internal CombustionEngines STL ............................. Steel STR ............................ Straight SYN ............................ Synthetic THD ............................ Thread THK ............................ Thick TM .............................. Technical Manual TMDE ......................... Test, Measurement, and Diagnostic Equipment TRH ............................ Truss Head TRK ............................ Track U/M ............................. Unit of Measure UN .............................. Unified V ................................. Variable V ................................. Volt VDC ............................ Direct-Current Volts WG ............................. Wire Gage WP .............................. Water Pump WSHR ......................... Washer XMSN ......................... Transmission YD .............................. Yard Abbreviation Explanation B-8 (B-9 Blank)        Change 3