AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Valve Poppet Engine |
| Federal Supply Group (FSG) | Engines Turbines and Components |
| Federal Supply Class (FSC) | 2815 Diesel Engines and Components |
| National Item Identification Number (NIIN) | 01-057-6639 (010576639) |
| NCB Code | USA (01) |
| Manufacturer | Cummins Incorporated |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | FLAT |
| AASU | HEAD HEIGHT | 0.2656 INCHES MINIMUM AND 0.2750 INCHES MAXIMUM |
| AATE | CHAMFER ANGLE IN DEG | 45.0 |
| AAVZ | GROOVE DIAMETER | 0.4220 INCHES MINIMUM AND 0.4280 INCHES MAXIMUM |
| AAZP | CHAMFER LENGTH | 0.0100 INCHES MINIMUM AND 0.0250 INCHES MAXIMUM |
| ABGF | GROOVE WIDTH | 0.1320 INCHES MINIMUM AND 0.1420 INCHES MAXIMUM |
| ABKV | OUTSIDE DIAMETER | 2.2150 INCHES MINIMUM AND 2.2250 INCHES MAXIMUM |
| AJFY | SEAT ANGLE IN DEG | 30.0 |
| ALYX | STEM STYLE | GROOVED |
| ALYZ | CARBON RELIEF GROOVE | NOT INCLUDED |
| ALZB | NECK RADIUS | 0.7900 INCHES MINIMUM AND 0.8100 INCHES MAXIMUM |
| ALZD | STEM LENGTH | 7.2730 INCHES MINIMUM AND 7.2870 INCHES MAXIMUM |
| ALZE | STEM DIAMETER | 0.4945 INCHES MINIMUM AND 0.4955 INCHES MAXIMUM |
| ALZG | DISTANCE FROM GROOVE TO STEM END | 0.4600 INCHES NOMINAL |
| ANNQ | MATERIAL AND LOCATION | STEEL OVERALL |
| ASXJ | METALLIC HARDNESS RATING AND LOCATION | 52.0 ROCKWELL C MINIMUM TIP |
| Relevant Components for NSN - 2815-01-057-6639, 2815010576639 | ||||
| 2805-01-240-6126 (2805012406126) | 2805-00-262-7518 (2805002627518) | 2815-01-248-8775 (2815012488775) | 2840-01-596-5492 (2840015965492) | |
| 2805-01-066-5405 (2805010665405) | 2840-01-617-3491 (2840016173491) | 2815-01-127-3597 (2815011273597) | 2805-01-066-4028 (2805010664028) | |
| 2825-00-025-9691 (2825000259691) | 2825-00-992-0632 (2825009920632) | 2815-00-361-9922 (2815003619922) | 2840-01-653-5046 (2840016535046) | |
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