| Item Name | Generator Engine Ac |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2920 Engine Electrical System Components Nonaircraft |
| National Item Identification Number (NIIN) | 00-391-2989 (003912989) |
| NCB Code | USA (00) |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJF | THREAD DIRECTION | RIGHT-HAND |
| AASA | THREAD LENGTH | 0.720 INCHES NOMINAL |
| ABFF | FURNISHED ITEMS | RADIO INTERFERENCE SHIELDING AND WOODRUFF KEY |
| ABPT | SECOND STEP DIAMETER | 0.668 INCHES MINIMUM AND 0.669 INCHES MAXIMUM |
| ABRR | KEYWAY WIDTH | 0.125 INCHES NOMINAL |
| ABVA | UNTHREADED PORTION LENGTH | 1.280 INCHES MINIMUM AND 1.340 INCHES MAXIMUM |
| ACJC | MOUNTING HOLE THREAD DIRECTION | RIGHT-HAND |
| ADER | MOUNTING STYLE | BRACKET MTD W/THREE MTG HOLES, TOP HOLE THREADED |
| ADZC | ENVIRONMENTAL PROTECTION | DUSTPROOF AND CORROSION RESISTANT AND FUNGUS RESISTANT |
| AFYS | KEYWAY LENGTH | 0.625 INCHES NOMINAL |
| AHZV | SUBMERSIBILITY | NONSUBMERSIBLE |
| AKCT | SHAFT ROTATION DIRECTION | CLOCKWISE |
| ANTX | DISTANCE FROM END TO KEYWAY CENTER | 1.330 INCHES MINIMUM AND 1.390 INCHES MAXIMUM |
| AWDP | THREAD DIAMETER | 0.500 INCHES NOMINAL |
| AXHX | GROUND POLARITY TYPE | NEGATIVE |
| BCGD | ARMATURE MINIMUM SPEED IN RPM AT FULL CURRENT OUTPUT | 1950 |
| BCGF | III MAXIMUM OUTPUT CURRENT RATING IN AMPS | 18.0 |
| BCGN | GROUNDING METHOD | INTERNAL |
| BCGS | SHAFT DRIVE END STYLE | STRAIGHT SHAFT END, THREADED, W/KEYWAY |
| BCLY | DISTANCE BETWEEN SHAFT CENTER AND BOTTOM MOUNTING HOLE CENTER | 3.875 INCHES NOMINAL |
| BCLZ | DISTANCE BETWEEN SHAFT CENTER AND TOP MOUNTING HOLE CENTER | 3.500 INCHES NOMINAL |
| BCMB | ANGULAR DEVIATION OF FIRST HOLE FROM TOP CENTER IN DEG | 180.0 |
| BCMC | ANGULAR DEVIATION OF SECOND HOLE FROM FIRST HOLE IN DEG | 159.0 |
| BCMD | DISTANCE BETWEEN INSIDE SURFACES OF HINGE BRACKET | 7.243 INCHES MINIMUM AND 7.257 INCHES MAXIMUM |
| BCMF | DISTANCE BETWEEN OUTSIDE SURFACES OF HINGE BRACKET | 8.103 INCHES MINIMUM AND 8.197 INCHES MAXIMUM |
| BCMH | BOTTOM MOUNTING HOLE DIAMETER | 0.447 INCHES MINIMUM AND 0.459 INCHES MAXIMUM |
| BCND | MAXIMUM RATED ARMATURE SPEED IN RPM | 4000 |
| BZRR | THREAD SERIES | UNF |
| CFHL | THREAD CLASS | 2A |
| CMLK | MOUNTING HOLE THREAD SERIES DESIGNATOR | UNC |
| CMLL | MOUNTING HOLE THREAD DIAMETER | 0.375 INCHES NOMINAL |
| CMLM | MOUNTING HOLE THREAD QUANTITY PER INCH | 16 |
| CMLN | MOUNTING HOLE THREAD CLASS | 2B |
| CMLP | THREAD QUANTITY PER INCH | 20 |
| ELEC | VOLTAGE IN VOLTS | 28.0 |
| TEST | TEST DATA DOCUMENT | 81349-MIL-G-12604 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DATA IN SPECIFICATION FORMAT; EXCLUDES COMMERCIAL CATALOGS, INDUSTRY DIRECTORIES, AND SIMILAR TRADE PUBLICATIONS, REFLECTI |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | B CLASS AND 2 GRADE AND B GROUP |
| 2910-00-001-3841 (2910000013841) | 2910-00-001-3856 (2910000013856) | 2910-00-001-3873 (2910000013873) | 2910-00-001-3875 (2910000013875) |
| 2910-00-001-6116 (2910000016116) | 2910-00-001-6176 (2910000016176) | 2910-00-001-7736 (2910000017736) | 2910-00-001-7829 (2910000017829) |
| 2910-00-001-9024 (2910000019024) | 2910-00-001-9030 (2910000019030) | 2910-00-001-9042 (2910000019042) | 2910-00-001-9050 (2910000019050) |
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