| Item Name | Seat Valve |
| Federal Supply Group (FSG) | Valves |
| Federal Supply Class (FSC) | 4820 Valves Nonpowered |
| National Item Identification Number (NIIN) | 01-104-6770 (011046770) |
| NCB Code | USA (01) |
| Manufacturer | Rolls Royce Corporation, Allison Transmission Inc, Precision Piece Parts Inc, Space Age Engineering Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKK | FLANGE DIAMETER | 1.122 INCHES MINIMUM AND 1.123 INCHES MAXIMUM |
| ADAR | BODY OUTSIDE DIAMETER | 1.008 INCHES MINIMUM AND 1.012 INCHES MAXIMUM |
| AGAV | END ITEM IDENTIFICATION | T-56 ENGINE |
| AJFZ | SEAT RADIUS | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM |
| AJRF | FLANGE SEAT TO DISK END HEIGHT | 0.259 INCHES NOMINAL |
| AJRM | UNDER FLANGE HEIGHT | 0.165 INCHES MINIMUM AND 0.170 INCHES MAXIMUM |
| CQFM | HARDNESS RATING | 32.0 ROCKWELL C MINIMUM OVERALL AND 36.0 ROCKWELL C MAXIMUM OVERALL |
| CQKM | SEATING SURFACE SHAPE | RADIAL |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.500 INCHES MINIMUM FIRST STEP AND 0.505 INCHES MAXIMUM FIRST STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.920 INCHES NOMINAL SECOND STEP |
| CQKW | BODY STEPPED INSIDE DIAMETER | 0.978 INCHES MINIMUM THIRD STEP AND 0.983 INCHES MAXIMUM THIRD STEP |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | PLAIN FLANGED |
| Components Related to NSN - 4820-01-104-6770, 4820011046770 | ||||
| 4820-01-373-8958 (4820013738958) | 4820-01-129-8013 (4820011298013) | 4820-01-440-6910 (4820014406910) | 4810-01-523-9395 (4810015239395) | |
| 4810-01-541-8177 (4810015418177) | 4810-01-480-3370 (4810014803370) | 4820-01-190-5941 (4820011905941) | 4820-01-130-0014 (4820011300014) | |
| 4820-01-365-6951 (4820013656951) | 4820-01-414-5558 (4820014145558) | 4820-01-319-9150 (4820013199150) | 4820-00-488-8376 (4820004888376) | |
If You’re Ever Looking for NSN parts Or Have an Aircraft On Ground Situation, Don’t forget That We offer Competitive Pricing and Guaranteed On-Time Delivery.
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