| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-620-8515 (006208515) |
| NCB Code | USA (00) |
| Manufacturer | Ashcroft Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.750 INCHES NOMINAL SINGLE THREADED PORTION |
| ABKK | FLANGE DIAMETER | 5.187 INCHES NOMINAL |
| ADAS | BODY INSIDE DIAMETER | 4.375 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 1.750 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 18 SINGLE THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 5.187 INCHES SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| MATT | MATERIAL | STEEL COMP 414 OVERALL |
| THSD | THREAD SERIES DESIGNATOR | UNS SINGLE THREADED PORTION |
| Relevant Components for NSN - 4820-00-620-8515, 4820006208515 | ||||
| 4820-00-405-2314 (4820004052314) | 4820-01-644-7717 (4820016447717) | 4820-00-138-5801 (4820001385801) | 4820-01-478-3615 (4820014783615) | |
| 4810-01-231-9665 (4810012319665) | 4810-01-463-1795 (4810014631795) | 4820-01-270-4213 (4820012704213) | 4820-01-482-5390 (4820014825390) | |
| 4810-01-574-6488 (4810015746488) | 4820-01-375-3688 (4820013753688) | 4810-01-486-6370 (4810014866370) | 4820-01-562-8058 (4820015628058) | |
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