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| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 00-678-9815 (006789815) |
| NCB Code | USA (00) |
| Manufacturer | Napco International Llc, Kurz And Root Generator Company Llc, Donaldson Company Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 25.375 INCHES MINIMUM AND 25.625 INCHES MAXIMUM |
| ACQW | INLET CONNECTION TYPE | FLANGE SINGLE INLET |
| ADAV | OVERALL DIAMETER | 7.000 INCHES NOMINAL |
| AJLW | OUTLET INSIDE DIAMETER | 3.005 INCHES MINIMUM AND 3.025 INCHES MAXIMUM 1ST OUTLET |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | AIR |
| ARND | MUFFLER DESIGN | BAFFLE |
| ARNE | BAFFLE QUANTITY | 2 |
| ARNF | TUBE QUANTITY | 2 |
| ARNG | BODY SHAPE | ROUND |
| ARNH | OPERATING POSITION | HORIZONTAL |
| ARNJ | INLET LOCATION | CENTRALLY LOCATED INSIDE 4-1/4 IN. PORM 1/16 FROM END SINGLE INLET |
| ARNL | INLET FLANGE SHAPE | SQUARE SINGLE INLET |
| ARNM | INLET FLANGE MOUNTING PROVISION AND QUANTITY | 4 HOLES SINGLE INLET4 HOLES |
| ARNN | INLET FLANGE MOUNTING HOLE DIAMETER | 0.563 INCHES NOMINAL SINGLE INLET0.563 INCHES NOMINAL |
| ARNT | INLET FLANGE MOUNTING PROVISION SPACING | 4-1/4 IN. C TO C DIM. OF STUDS SINGLE INLET |
| ARTH | OUTLET CONNECTION TYPE | UNTHREADED 1ST OUTLET |
| ARTJ | OUTLET LOCATION | CENTRALLY LOCATED IN END SECTION OF BODY 1ST OUTLET |
| ARTK | OUTLET PROJECTION LENGTH | 2.344 INCHES NOMINAL 1ST OUTLET2.344 INCHES NOMINAL |
| ARWA | OUTLET OUTSIDE DIAMETER | 3.128 INCHES MINIMUM AND 3.148 INCHES MAXIMUM 1ST OUTLET |
| ARWC | OUTLET INTEGRAL TAIL PIPE LENGTH | 19.313 INCHES MINIMUM AND 19.438 INCHES MAXIMUM 1ST OUTLET |
| MATT | MATERIAL | STEEL |
| ZZZV | FSC APPLICATION DATA | 1. DIESEL ENGINE,GENERATOR SET |
| Relevant Components for NSN - 2990-00-678-9815, 2990006789815 | ||||
| 2910-00-362-6680 (2910003626680) | 2930-00-364-9190 (2930003649190) | 2930-00-657-6128 (2930006576128) | 2995-01-313-0691 (2995013130691) | |
| 2915-00-931-5119 (2915009315119) | 2920-01-448-1346 (2920014481346) | 2910-01-684-5450 (2910016845450) | 2930-01-389-2291 (2930013892291) | |
| 2910-00-605-5306 (2910006055306) | 2910-01-546-5626 (2910015465626) | 2920-01-644-6835 (2920016446835) | 2910-00-214-6784 (2910002146784) | |
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