| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-020-3395 (010203395) |
| NCB Code | USA (01) |
| Manufacturer | Navair And Navsea Managed |
| MRC | Criteria | Characteristic |
|---|---|---|
| AAJD | THREAD CLASS | 3A SINGLE THREADED PORTION |
| AASA | THREAD LENGTH | 0.281 INCHES NOMINAL SINGLE THREADED PORTION |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.344 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 0.562 INCHES NOMINAL |
| CQJX | NOMINAL THREAD SIZE | 0.562 INCHES SINGLE THREADED PORTION |
| CQKM | SEATING SURFACE SHAPE | ANGULAR |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.125 INCHES NOMINAL FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.281 INCHES NOMINAL SECOND STEP |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| FEAT | SPECIAL FEATURES | TESTED IAW MIL-M-19595 |
| MATT | MATERIAL | COPPER ALLOY OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | QQ-C-390,TYPE 1,ALLOY X6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | THREADED FLANGED |
| THSD | THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |
| Relevant Components for NSN - 4820-01-020-3395, 4820010203395 | ||||
| 4820-01-478-7250 (4820014787250) | 4820-01-157-2874 (4820011572874) | 4820-01-152-3022 (4820011523022) | 4820-00-622-4732 (4820006224732) | |
| 4820-01-521-9794 (4820015219794) | 4820-01-396-0684 (4820013960684) | 4820-01-450-7273 (4820014507273) | 4820-01-124-2752 (4820011242752) | |
| 4820-01-233-6840 (4820012336840) | 4820-00-495-7877 (4820004957877) | 4820-01-708-6366 (4820017086366) | 4820-00-220-3237 (4820002203237) | |
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