| 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) | 00-274-3462 (002743462) |
| NCB Code | USA (00) |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | FLAT |
| ABKW | OVERALL HEIGHT | 4.875 INCHES NOMINAL |
| ABMZ | DIAMETER | 4.625 INCHES NOMINAL |
| ACXM | OIL PASSAGE TYPE | SLOT |
| ACXU | PINHOLE DIAMETER | 1.2499 INCHES MINIMUM AND 1.2501 INCHES MAXIMUM |
| AGYE | SURFACE FINISH | FINISHED |
| AXFR | FINISHED SIZE DESIGNATION | STANDARD |
| AXFT | SKIRT TYPE | FULL SPLIT |
| AXFX | SKIRT BOTTOM CUTAWAY FEATURE | NOT INCLUDED |
| AXFZ | RING GROOVE QUANTITY | 5 |
| AXGB | RING GROOVE WIDTH | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM 2ND RING |
| AXGB | RING GROOVE WIDTH | 0.1255 INCHES MINIMUM AND 0.1265 INCHES MAXIMUM 4TH RING |
| AXGB | RING GROOVE WIDTH | 0.1265 INCHES MINIMUM AND 0.1275 INCHES MAXIMUM 1ST RING |
| AXGB | RING GROOVE WIDTH | 0.1880 INCHES MINIMUM AND 0.1890 INCHES MAXIMUM 3RD RING |
| AXGD | RING GROOVE DIAMETER | 4.163 INCHES MINIMUM AND 4.177 INCHES MAXIMUM 3RD RING |
| AXGD | RING GROOVE DIAMETER | 4.203 INCHES MINIMUM AND 4.217 INCHES MAXIMUM 1ST RING |
| AXGD | RING GROOVE DIAMETER | 4.203 INCHES MINIMUM AND 4.217 INCHES MAXIMUM 2ND RING |
| AXGD | RING GROOVE DIAMETER | 4.203 INCHES MINIMUM AND 4.217 INCHES MAXIMUM 4TH RING |
| AXGE | RING GROOVE POSITION BELOW PISTON PIN | NUMBER 1,NUMBER 2,NUMBER 3,AND NUMBER 4 ALL RINGS |
| AXPH | OIL GROOVE | NOT INCLUDED |
| AXPK | DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 2.307 INCHES MINIMUM AND 2.317 INCHES MAXIMUM |
| AXPL | PIN HOLE BUSHING | NOT INCLUDED |
| AXPM | DISTANCE BETWEEN PIN BOSSES | 1.312 INCHES NOMINAL |
| AXPN | RETAINING RING GROOVE | NOT INCLUDED |
| AXPP | PIN | INCLUDED |
| AXPQ | PIN TYPE FOR WHICH DESIGNED | FLOATING |
| AXPR | RING | NOT INCLUDED |
| BQBL | CARBON GROOVE | NOT INCLUDED |
| CXSP | SKIRT SLOT STYLE | BASE TO GROOVE SLOT |
| MATT | MATERIAL | ALUMINUM |
| SFTT | SURFACE TREATMENT | TIN |
| 2805-00-001-3854 (2805000013854) | 2805-00-001-6164 (2805000016164) | 2805-00-001-6575 (2805000016575) | 2805-00-001-8927 (2805000018927) |
| 2805-00-001-9025 (2805000019025) | 2805-00-001-9085 (2805000019085) | 2805-00-003-0111 (2805000030111) | 2805-00-003-0387 (2805000030387) |
| 2805-00-003-0747 (2805000030747) | 2805-00-003-7875 (2805000037875) | 2805-00-004-8307 (2805000048307) | 2805-00-004-8361 (2805000048361) |
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