| Item Name | Ring Bearing Inner |
| Federal Supply Group (FSG) | Bearings |
| Federal Supply Class (FSC) | 3110 Bearings Antifriction Unmounted |
| National Item Identification Number (NIIN) | 00-278-6951 (002786951) |
| NCB Code | USA (00) |
| Manufacturer | Regal Beloit America Inc, Timken Aerospace Inc, Zvl Zkl Bearing Corp, Messinger Bearings Corporation, Fag Bearings Corporation, American Roller Bearing Co |
| Part Number | Manufacturer | Item Name | RFQ |
|---|---|---|---|
| C87780-50 | regal beloit america inc | ring bearing inner | RFQ |
| C87780-50 | timken aerospace inc | ring bearing inner | RFQ |
| C87780-50 | zvl zkl bearing corp | ring bearing inner | RFQ |
| C87780-50 | messinger bearings corporation | ring bearing inner | RFQ |
| C87780-50 | fag bearings corporation | ring bearing inner | RFQ |
| C87780-50 | american roller bearing co | ring bearing inner | RFQ |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABMK | OVERALL WIDTH | 3.4950 INCHES MINIMUM AND 3.5000 INCHES MAXIMUM |
| ABXV | BORE DIAMETER | 7.8728 INCHES MINIMUM AND 7.8740 INCHES MAXIMUM |
| ADGA | OVERALL OUTSIDE DIAMETER | 9.1227 INCHES MINIMUM AND 9.1239 INCHES MAXIMUM |
| AGYE | SURFACE FINISH | GROUND |
| AGZD | BORE SHAPE | STRAIGHT |
| CRTL | CRITICALITY CODE JUSTIFICATION | FEAT |
| CTFZ | STANDARD TOLERANCE DESIGNATION | AFBMA CLASS 00 |
| FEAT | SPECIAL FEATURES | THE ITEM IS A NON-AVIATION CRITICAL SAFETY ITEM (CSI) WHOSE FAILURE WILL RESULT IN SERIOUS DAMAGE TO EQUIPMENT OR SERIOUS INJURY OR DEATH TO PERSONNEL. |
| MATT | MATERIAL | STEEL OVERALL |
| STYL | STYLE DESIGNATOR | INNER RING,ROLLER,CYLINDRICAL |
| Relevant Components for NSN - 3110-00-278-6951, 3110002786951 | ||||
| 3120-01-494-3241 (3120014943241) | 3110-00-307-7377 (3110003077377) | 3110-00-903-6779 (3110009036779) | 3120-00-421-7780 (3120004217780) | |
| 3120-00-887-0410 (3120008870410) | 3120-00-159-7150 (3120001597150) | 3110-01-266-4906 (3110012664906) | 3120-01-380-1647 (3120013801647) | |
| 3120-00-279-0563 (3120002790563) | 3120-01-303-2883 (3120013032883) | 3120-01-459-5160 (3120014595160) | 3130-01-622-9685 (3130016229685) | |
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