AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Muffler Exhaust |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-115-0970 (011150970) |
| NCB Code | USA (01) |
| Manufacturer | Marotta Controls Inc, Allied Witan Co |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABHP | OVERALL LENGTH | 4.465 INCHES NOMINAL |
| ACQW | INLET CONNECTION TYPE | THREADED |
| ACRX | INLET THREAD DIRECTION | RIGHT-HAND |
| ADAV | OVERALL DIAMETER | 1.845 INCHES NOMINAL |
| APGF | DESIGN TYPE | DRY |
| ARNA | COOLANT TYPE | ANY ACCEPTABLE |
| ARND | MUFFLER DESIGN | BAFFLE |
| ARNE | BAFFLE QUANTITY | 1 |
| ARNG | BODY SHAPE | ROUND |
| ARNH | OPERATING POSITION | ANY ACCEPTABLE |
| ARNJ | INLET LOCATION | CENTRALLY LOCATED IN END SECTION OF BODY |
| ARNK | INLET PROJECTION LENGTH | 0.650 INCHES NOMINAL |
| ARNW | INLET THREAD SIZE | 0.438-20 |
| ARNX | INLET THREAD SERIES DESIGNATOR | UNF |
| ARSP | INLET THREAD LOCATION | EXTERNAL |
| ARXY | NONCONNECTION OUTLET TYPE AND QUANTITY | 1 PERFORATED |
| ARXZ | NONCONNECTION OUTLET LOCATION | OUTER PERIPHERY OF BODY |
| ARYA | NONCONNECTION OUTLET SIZE | 1.590 IN. DIA BY 2.570 IN. LG |
| MATL | MATERIAL | STEEL, CORROSION RESISTING AND PHENOL |
| SFTT | SURFACE TREATMENT | PASSIVATE |
| Relevant Components for NSN - 4820-01-115-0970, 4820011150970 | ||||
| 4810-01-693-0546 (4810016930546) | 4810-01-224-8636 (4810012248636) | 4810-00-181-8826 (4810001818826) | 4810-00-533-2538 (4810005332538) | |
| 4820-01-319-3454 (4820013193454) | 4820-01-154-9733 (4820011549733) | 4810-01-176-9496 (4810011769496) | 4820-01-278-5449 (4820012785449) | |
| 4810-01-152-7681 (4810011527681) | 4810-00-127-2787 (4810001272787) | 4820-00-557-7800 (4820005577800) | 4810-01-469-1460 (4810014691460) | |
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