| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 00-399-2630 (003992630) |
| NCB Code | USA (00) |
| Manufacturer | Aham Plastics, Hunt Valve Company Inc, Hammel Dahl Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 2A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.312 INCHES NOMINAL SINGLE THREADED PORTION |
| ABKK | FLANGE DIAMETER | 0.625 INCHES NOMINAL |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 1.000 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 0.312 INCHES NOMINAL |
| CMLP | THREAD QUANTITY PER INCH | 20 SINGLE THREADED PORTION |
| CQJX | NOMINAL THREAD SIZE | 0.438 INCHES SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | FLAT |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.093 INCHES NOMINAL SECOND STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.281 INCHES NOMINAL FIRST STEP |
| FEAT | SPECIAL FEATURES | FLANGE IS HEXAGON SHAPE |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | THREADED FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |
| Relevant Components for NSN - 4820-00-399-2630, 4820003992630 | ||||
| 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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