| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 00-887-9726 (008879726) |
| NCB Code | USA (00) |
| Manufacturer | Military Specifications, Donaldson Company Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ACQW | INLET CONNECTION TYPE | FLANGE SINGLE INLET |
| ADAV | OVERALL DIAMETER | 12.500 INCHES NOMINAL |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | AIR |
| ARND | MUFFLER DESIGN | DIRECTIONAL VANE W/INTEGRAL SPARK ARRESTOR |
| ARNG | BODY SHAPE | ROUND |
| ARNJ | INLET LOCATION | CENTRALLY LOCATED IN END SECTION OF BODY SINGLE INLET |
| ARNL | INLET FLANGE SHAPE | ROUND SINGLE INLET |
| ARNM | INLET FLANGE MOUNTING PROVISION AND QUANTITY | 8 HOLES SINGLE INLET8 HOLES |
| ARTJ | OUTLET LOCATION | CENTRALLY LOCATED IN END SECTION OF BODY 1ST OUTLET |
| ARTM | OUTLET FLANGE MOUNTING PROVISION AND QUANTITY | 8 HOLES 1ST OUTLET8 HOLES |
| ARTT | OUTLET FLANGE MOUNTING PROVISION SPACING | 6-9/16 IN. DIA BOLT CIRCLE 1ST OUTLET |
| MATT | MATERIAL | STEEL |
| ABHP | OVERALL LENGTH | 52.000 INCHES NOMINAL |
| ARNN | INLET FLANGE MOUNTING HOLE DIAMETER | 0.562 INCHES NOMINAL SINGLE INLET0.562 INCHES NOMINAL |
| ARNT | INLET FLANGE MOUNTING PROVISION SPACING | 6-9/16 IN. DIA BOLT CIRCLE SINGLE INLET |
| ARTH | OUTLET CONNECTION TYPE | FLANGE 1ST OUTLET |
| ARTL | OUTLET FLANGE SHAPE | ROUND 1ST OUTLET |
| ARTN | OUTLET FLANGE MOUNTING HOLE DIAMETER | 0.562 INCHES NOMINAL 1ST OUTLET0.562 INCHES NOMINAL |
| SFTT | SURFACE TREATMENT | PAINT |
| ZZZT | NONDEFINITIVE SPEC/STD DATA | A TYPE |
| Relevant Components for NSN - 2990-00-887-9726, 2990008879726 | ||||
| 2990-01-375-8177 (2990013758177) | 2915-00-150-7331 (2915001507331) | 2920-00-324-3685 (2920003243685) | 2920-00-741-6529 (2920007416529) | |
| 2995-00-915-7733 (2995009157733) | 2940-01-686-2924 (2940016862924) | 2910-01-359-9944 (2910013599944) | 2915-00-367-9295 (2915003679295) | |
| 2995-00-798-8304 (2995007988304) | 2990-00-169-2920 (2990001692920) | 2930-00-322-9520 (2930003229520) | 2995-00-004-1343 (2995000041343) | |
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