AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| 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 | Space Age Engineering Inc, Rolls Royce Corporation, Precision Piece Parts Inc, Allison Transmission 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 |
| Relevant Components for NSN - 4820-01-104-6770, 4820011046770 | ||||
| 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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