| Item Name | Piston Internal Com |
| INC Code | 16509 |
| Federal Supply Group (FSG) | Engine Accessories |
| Federal Supply Class (FSC) | 2990 Miscellaneous Engine Accessories Nonaircraft |
| National Item Identification Number (NIIN) | 00-951-1577 (009511577) |
| NCB Code | USA (00) |
| Manufacturer | Caterpillar Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| AXPR | RING | NOT INCLUDED |
| WGHT | WEIGHT | 19.0 OUNCES |
| AXGD | RING GROOVE DIAMETER | 3.211 INCHES MINIMUM 1ST RING 3.221 INCHES MAXIMUM 2ND RING 3.211 INCHES MINIMUM 3RD RING 3.221 INCHES MAXIMUM 4TH RING |
| ZZZV | FSC APPLICATION DATA | GASOLINE RECIPROCATING ENGINE,STARTING ENGINE TYPE |
| SR-5 | THE MANUFACTURERS DATA | |
| SR-5 | DESIGN CONTROL REFERENCE | 8M4301 |
| AASK | HEAD STYLE | FLAT |
| AGYE | SURFACE FINISH | FINISHED |
| AXPM | DISTANCE BETWEEN PIN BOSSES | 1.240 INCHES NOMINAL |
| AXPN | RETAINING RING GROOVE | INCLUDED |
| ACXU | PINHOLE DIAMETER | 0.8590 INCHES MINIMUM AND 0.8600 INCHES MAXIMUM |
| ABMZ | DIAMETER | 3.625 INCHES NOMINAL |
| AXFR | FINISHED SIZE DESIGNATION | STANDARD |
| AXGB | RING GROOVE WIDTH | 0.0955 INCHES MINIMUM 1ST RING |
| AXPH | OIL GROOVE | NOT INCLUDED |
| AXPL | PIN HOLE BUSHING | NOT INCLUDED |
| MATT | MATERIAL | ALUMINUM |
| BQBL | CARBON GROOVE | NOT INCLUDED |
| AXPK | DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 1.810 INCHES NOMINAL |
| ABKW | OVERALL HEIGHT | 3.440 INCHES NOMINAL |
| AXFX | SKIRT BOTTOM CUTAWAY FEATURE | NOT INCLUDED |
| SR-5 | MANUFACTURERS CODE | 11083 |
| AXFT | SKIRT TYPE | SOLID |
| AXPP | PIN | NOT INCLUDED |
| MATL | MATERIAL | ALUMINUM |
| AXPQ | PIN TYPE FOR WHICH DESIGNED | FLOATING |
| AXFZ | RING GROOVE QUANTITY | 3 |
| Relevant Components for NSN - 2990-00-951-1577, 2990009511577 | ||||
| 2990-01-211-1432 (2990012111432) | 2990-00-734-2911 (2990007342911) | 2990-01-325-8264 (2990013258264) | 2990-00-231-4807 (2990002314807) | |
| 2990-01-581-4869 (2990015814869) | 2990-01-533-4821 (2990015334821) | 2990-01-495-8775 (2990014958775) | 2990-01-103-3680 (2990011033680) | |
| 2990-01-564-8070 (2990015648070) | 2990-00-139-4261 (2990001394261) | 2990-00-844-5017 (2990008445017) | 2990-00-218-6722 (2990002186722) | |
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AS9120B and ISO 9001:2015 |
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Aviation Suppliers Association Member |
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FAA AC 0056B Accredited |
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AS 6081:2012 Certification |
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ESD S20.20-2014 Certification |
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