AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
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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) | 00-633-5979 (006335979) |
| NCB Code | USA (00) |
| Manufacturer | Ashcroft Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A FIRST THREADED PORTION |
| AAJD | THREAD CLASS | 3A SECOND THREADED PORTION |
| AASA | THREAD LENGTH | 0.688 INCHES NOMINAL FIRST THREADED PORTION |
| AASA | THREAD LENGTH | 0.688 INCHES NOMINAL SECOND THREADED PORTION |
| ABKK | FLANGE DIAMETER | 3.750 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 1.376 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.688 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 4.312 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 14 SECOND THREADED PORTION |
| CMLP | THREAD QUANTITY PER INCH | 16 FIRST THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 1.688 INCHES FIRST THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 1.875 INCHES SECOND THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| CQKW | BODY STEPPED INSIDE DIAMETER | 1.125 INCHES MINIMUM AND 1.130 INCHES MAXIMUM SECOND STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 1.156 INCHES NOMINAL THIRD STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 1.326 INCHES MINIMUM AND 1.330 INCHES MAXIMUM FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 1.500 INCHES NOMINAL FOURTH STEP |
| MATT | MATERIAL | STEEL COMP 347 OVERALL |
| STYL | STYLE DESIGNATOR | DOUBLE FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UN FIRST THREADED PORTION |
| THSD | THREAD SERIES DESIGNATOR | UNS SECOND THREADED PORTION |
| Relevant Components for NSN - 4820-00-633-5979, 4820006335979 | ||||
| 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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