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| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-175-1981 (001751981) |
| NCB Code | USA (00) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.053 INCHES NOMINAL SINGLE THREADED PORTION |
| ABKW | OVERALL HEIGHT | 0.100 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 0.375 INCHES NOMINAL |
| AJFZ | SEAT RADIUS | 0.005 INCHES NOMINAL |
| AJSG | SEAT ANGLE IN DEG | 5.000 MINIMUM AND 30.000 MAXIMUM |
| CQJX | NOMINAL THREAD SIZE | 0.562 INCHES SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| MATT | MATERIAL | BRASS BAR OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-B-611-B FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN THREADED |
| THSD | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |
| Relevant Components for NSN - 4820-00-175-1981, 4820001751981 | ||||
| 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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