AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 01-038-9191 (010389191) |
| NCB Code | USA (01) |
| Manufacturer | Harco Manufacturing Company, Drs Environmental Systems Inc, Keco Industries Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 59.250 INCHES MINIMUM AND 59.750 INCHES MAXIMUM |
| ACQW | INLET CONNECTION TYPE | FLANGE SINGLE INLET |
| ADAV | OVERALL DIAMETER | 17.000 INCHES NOMINAL |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | AIR |
| ARND | MUFFLER DESIGN | DIRECTIONAL VANE W/INTEGRAL SPARK ARRESTOR |
| ARNG | BODY SHAPE | ROUND |
| ARNH | OPERATING POSITION | HORIZONTAL |
| ARNJ | INLET LOCATION | EXTREME RIGHT SECTION OF BODY SINGLE INLET |
| ARNK | INLET PROJECTION LENGTH | 6.250 INCHES NOMINAL SINGLE INLET6.250 INCHES NOMINAL |
| ARNL | INLET FLANGE SHAPE | ROUND SINGLE INLET |
| ARNM | INLET FLANGE MOUNTING PROVISION AND QUANTITY | 4 HOLES SINGLE INLET4 HOLES |
| ARNN | INLET FLANGE MOUNTING HOLE DIAMETER | 0.500 INCHES NOMINAL SINGLE INLET0.500 INCHES NOMINAL |
| ARNT | INLET FLANGE MOUNTING PROVISION SPACING | FOUR HOLES EQUALLY SPACED ON 8.500 DIA BOLT CIRCLE SINGLE INLET |
| ARTH | OUTLET CONNECTION TYPE | UNTHREADED 1ST OUTLET |
| ARTJ | OUTLET LOCATION | EXTREME LEFT SECTION OF BODY 1ST OUTLET |
| ARTK | OUTLET PROJECTION LENGTH | 5.625 INCHES NOMINAL 1ST OUTLET5.625 INCHES NOMINAL |
| ARWA | OUTLET OUTSIDE DIAMETER | 5.000 INCHES NOMINAL 1ST OUTLET5.000 INCHES NOMINAL |
| MATT | MATERIAL | STEEL CORROSION RESISTING |
| Relevant Components for NSN - 2990-01-038-9191, 2990010389191 | ||||
| 2945-00-429-6642 (2945004296642) | 2950-01-334-7313 (2950013347313) | 2940-01-239-6118 (2940012396118) | 2920-00-401-9401 (2920004019401) | |
| 2915-00-328-0913 (2915003280913) | 2910-01-190-4852 (2910011904852) | 2915-00-890-7803 (2915008907803) | 2910-01-577-6273 (2910015776273) | |
| 2990-00-363-8103 (2990003638103) | 2910-01-519-3650 (2910015193650) | 2915-00-089-4045 (2915000894045) | 2910-01-642-4357 (2910016424357) | |
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