AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Piston Internal Com |
| Federal Supply Group (FSG) | Engines Turbines and Components |
| Federal Supply Class (FSC) | 2805 Gasoline Reciprocating Engines Except Aircraft and Components |
| National Item Identification Number (NIIN) | 00-200-0142 (002000142) |
| NCB Code | USA (00) |
| Manufacturer | Military Standards Corp |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | FLAT |
| ABKW | OVERALL HEIGHT | 4.875 INCHES NOMINAL |
| ABMZ | DIAMETER | 4.250 INCHES NOMINAL |
| ACXM | OIL PASSAGE TYPE | SLOT |
| ACXU | PINHOLE DIAMETER | 1.2500 INCHES NOMINAL |
| AGYE | SURFACE FINISH | FINISHED |
| AXFR | FINISHED SIZE DESIGNATION | OVERSIZE |
| AXFS | OVERSIZE | 0.040 INCHES NOMINAL |
| AXFT | SKIRT TYPE | SEMISPLIT |
| AXFW | CUT DEPTH | 0.594 INCHES NOMINAL |
| AXFX | SKIRT BOTTOM CUTAWAY FEATURE | INCLUDED |
| AXFZ | RING GROOVE QUANTITY | 4 |
| AXGB | RING GROOVE WIDTH | 0.0970 INCHES MINIMUM AND 0.0980 INCHES MAXIMUM 1ST RING |
| AXGB | RING GROOVE WIDTH | 0.1265 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM 2ND RING |
| AXGB | RING GROOVE WIDTH | 0.2510 INCHES MINIMUM AND 0.2520 INCHES MAXIMUM 4TH RING |
| AXGD | RING GROOVE DIAMETER | 3.810 INCHES MINIMUM AND 3.820 INCHES MAXIMUM 1ST RING |
| AXGD | RING GROOVE DIAMETER | 3.834 INCHES MINIMUM AND 3.844 INCHES MAXIMUM 4TH RING |
| AXGD | RING GROOVE DIAMETER | 3.874 INCHES MINIMUM AND 3.884 INCHES MAXIMUM 2ND RING |
| AXGD | RING GROOVE DIAMETER | 3.874 INCHES MINIMUM AND 3.884 INCHES MAXIMUM 3RD RING |
| AXPH | OIL GROOVE | NOT INCLUDED |
| AXPK | DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 2.312 INCHES NOMINAL |
| AXPL | PIN HOLE BUSHING | NOT INCLUDED |
| AXPM | DISTANCE BETWEEN PIN BOSSES | 1.750 INCHES NOMINAL |
| AXPN | RETAINING RING GROOVE | INCLUDED |
| AXPP | PIN | INCLUDED |
| AXPQ | PIN TYPE FOR WHICH DESIGNED | LOCKING |
| AXPR | RING | NOT INCLUDED |
| BQBL | CARBON GROOVE | NOT INCLUDED |
| MATT | MATERIAL | ALUMINUM ALLOY |
| SFTT | SURFACE TREATMENT | TIN |
| WGHT | WEIGHT | 38.3 OUNCES |
| Relevant Components for NSN - 2805-00-200-0142, 2805002000142 | ||||
| 2840-01-358-6667 (2840013586667) | 2825-00-059-6804 (2825000596804) | 2840-01-536-5084 (2840015365084) | 2825-00-218-6025 (2825002186025) | |
| 2835-00-070-3789 (2835000703789) | 2815-01-513-0449 (2815015130449) | 2815-00-097-1842 (2815000971842) | 2840-00-406-8327 (2840004068327) | |
| 2840-01-489-1389 (2840014891389) | 2825-00-524-0790 (2825005240790) | 2825-00-271-9631 (2825002719631) | 2835-01-078-2054 (2835010782054) | |
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