2840-00-684-2985 CASE AND VANE ASSEMBLY,COMPRESSOR,AIRCRA Index 2925-00-684-2989 STARTER,ENGINE,ELECTRICAL

National Stock Number:
2925-00-684-2988

Federal Supply Class:
2925

National Item Identification Number:
006842988

Description:
SPARK PLUG

Detail:
AN ITEM CONTAINING TWO OR MORE ELECTRODES ACROSS WHICH AN ELECTRIC SPARK IS DISCHARGED TO IGNITE A FUEL AND AIR MIXTURE, PRIMARILY IN INTERNAL COMBUSTION ENGINES. EXCLUDES GLOW PLUG; AND ELECTRODE.


Manufacturer Information:
MILP788681349MILITARY SPECIFICATIONS PROMULGATED BY MILITARY DEPARTMENTS/AGENCIES UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
RHB29E0AFL4CHAMPION AEROSPACE LLC
RHB29N0AFL4CHAMPION AEROSPACE LLC
RHB29E14170HUGHES MISSILE SYSTEMS CO SAN DIEGO


Techincal Specification:
ELECTRODE STYLEFOUR GAP GROUND ELECTRODE
BARREL INSIDE DIAMETER0.560 INCHES NOMINAL
BODY STYLEELECTRICALLY SHIELDED, PARTIAL INSULATOR, GASKET SEAT
DC RESISTANCE RATING IN OHMS500.0 MINIMUM AND 1500.0 MAXIMUM
HEIGHT ABOVE MOUNTING SURFACE2.500 INCHES NOMINAL
PRESSURE RATING385.0 POUNDS PER SQUARE INCH NOMINAL MEAN EFFECTIVE
REACH LENGTH0.812 INCHES NOMINAL
SEAT MAJOR DIAMETER0.970 INCHES NOMINAL
SHIELD THREAD LENGTH0.375 INCHES NOMINAL
WIDTH ACROSS FLATS0.875 INCHES NOMINAL
TERMINAL SLEEVE INSIDE DIAMETER0.380 INCHES NOMINAL
THREAD SIZE AND SERIES/TYPE DESIGNATOR3/4-20 UNEF SHIELD
TOP TO SHIELD THREAD DISTANCE0.125 INCHES NOMINAL
TOP TO TERMINAL CONTACT DISTANCE1.500 INCHES NOMINAL
USAGE DESIGNAIRCRAFT ENGINE


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