| 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) | 00-377-5641 (003775641) |
| NCB Code | USA (00) |
| Part No | Manufacturer | Item Name | QTY | RFQ |
|---|---|---|---|---|
| MS13956-2 | chief of engineers | piston internal com | Avl | RFQ |
| MS13956 | chief of engineers | piston internal com | Avl | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| AASK | HEAD STYLE | FLAT |
| ABKW | OVERALL HEIGHT | 3.730 INCHES MINIMUM AND 3.750 INCHES MAXIMUM |
| ABMZ | DIAMETER | 3.750 INCHES NOMINAL |
| ACXU | PINHOLE DIAMETER | 0.9900 INCHES MINIMUM AND 0.9903 INCHES MAXIMUM |
| AGYE | SURFACE FINISH | FINISHED |
| AXFR | FINISHED SIZE DESIGNATION | OVERSIZE |
| AXFS | OVERSIZE | 0.020 INCHES NOMINAL |
| AXFT | SKIRT TYPE | SOLID |
| AXFW | CUT DEPTH | 0.400 INCHES NOMINAL |
| AXFX | SKIRT BOTTOM CUTAWAY FEATURE | INCLUDED |
| AXFZ | RING GROOVE QUANTITY | 3 |
| AXGB | RING GROOVE WIDTH | 0.0955 INCHES MINIMUM AND 0.0965 INCHES MAXIMUM 2ND RING |
| AXGB | RING GROOVE WIDTH | 0.0960 INCHES MINIMUM AND 0.0970 INCHES MAXIMUM 1ST RING |
| AXGB | RING GROOVE WIDTH | 0.3115 INCHES MINIMUM AND 0.3133 INCHES MAXIMUM 3RD RING |
| AXGD | RING GROOVE DIAMETER | 3.323 INCHES MINIMUM AND 3.333 INCHES MAXIMUM 1ST RING |
| AXGD | RING GROOVE DIAMETER | 3.323 INCHES MINIMUM AND 3.333 INCHES MAXIMUM 2ND RING |
| AXGD | RING GROOVE DIAMETER | 3.329 INCHES MINIMUM AND 3.339 INCHES MAXIMUM 3RD RING |
| AXPH | OIL GROOVE | NOT INCLUDED |
| AXPK | DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 2.088 INCHES MINIMUM AND 2.092 INCHES MAXIMUM |
| AXPL | PIN HOLE BUSHING | NOT INCLUDED |
| AXPM | DISTANCE BETWEEN PIN BOSSES | 1.480 INCHES MINIMUM AND 1.520 INCHES MAXIMUM |
| AXPN | RETAINING RING GROOVE | INCLUDED |
| AXPP | PIN | INCLUDED |
| AXPQ | PIN TYPE FOR WHICH DESIGNED | FLOATING |
| AXPR | RING | NOT INCLUDED |
| BQBL | CARBON GROOVE | NOT INCLUDED |
| MATT | MATERIAL | ALUMINUM |
| SFTT | SURFACE TREATMENT | TIN |
| WGHT | WEIGHT | 21.730 OUNCES |
| ZZZV | III FSC APPLICATION DATA | CYLINDER GROUP,GASOLINE ENGINE,NONAIRCRAFT |
| 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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