AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-344-0354 (003440354) |
| NCB Code | USA (00) |
| Manufacturer | Dresser Industries Inc, Ashcroft Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A FIRST THREADED PORTION |
| AAJD | THREAD CLASS | 2A SECOND THREADED PORTION |
| AASA | THREAD LENGTH | 0.438 INCHES NOMINAL FIRST THREADED PORTION |
| AASA | THREAD LENGTH | 0.875 INCHES NOMINAL SECOND THREADED PORTION |
| ABKK | FLANGE DIAMETER | 5.000 INCHES NOMINAL |
| ADAR | BODY OUTSIDE DIAMETER | 3.062 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 2.500 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.500 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 3.562 INCHES NOMINAL |
| AJSG | SEAT ANGLE IN DEG | 80.000 NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 16 FIRST THREADED PORTION |
| CMLP | THREAD QUANTITY PER INCH | 8 SECOND THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 3.000 INCHES FIRST THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 3.250 INCHES SECOND THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UN FIRST THREADED PORTION |
| THSD | THREAD SERIES DESIGNATOR | UN SECOND THREADED PORTION |
| Relevant Components for NSN - 4820-00-344-0354, 4820003440354 | ||||
| 4820-01-437-8926 (4820014378926) | 4820-01-258-2410 (4820012582410) | 4820-00-432-1714 (4820004321714) | 4820-01-271-9629 (4820012719629) | |
| 4820-01-578-9600 (4820015789600) | 4820-00-092-6590 (4820000926590) | 4820-01-417-2811 (4820014172811) | 4820-01-365-0880 (4820013650880) | |
| 4820-01-697-1452 (4820016971452) | 4820-15-149-7310 (4820151497310) | 4820-00-506-2869 (4820005062869) | 4820-00-330-9420 (4820003309420) | |
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