7. ABBREVIATIONS.   (cont) Abbreviation DC DIA EECM F FET FILH FOD FT GECM GRP h HD HEX ID IDENT K(k) KW LH MACH MATL MAX MHZ MIN MPU NCRES NHA NM NO. NPN NTP OD PHH PNH PNP PVC RBR RCPT REINF RFI SCH SHLD ARMY TM  5-6115-612-24P MARINE CORPS TM 6115-24P/1 AIR  FORCE 10  35C2-3-471-4 NAVY AG-320B0-IPE-000 Explanation direct  current diameter each Engine  Electronic  Control  Module Farad field  effect  transistor fillister  head foreign  object  deflector foot gage Generator Electronic Control Module group henry head hexagon internal  diameter identification inch kilo  (thousand) kilowatt long/length left hand machine material maxi  mum megahertz minimum microprocessor non-corrosion  resistant  steel next  higher  assembly nonmetallic number negative  positive  negative National  taper  pipe outside  diameter phillips  head pan head positive  negative  positive polyvinyl  chloride rubber receptacle reinforced radio  frequency  interference right hand socket head sheet shielded 1-11