AS9120B, ISO 9001:2015, and FAA AC 0056B Accredited
| Item Name | Seat Bearing |
| Federal Supply Group (FSG) | Bearings |
| Federal Supply Class (FSC) | 3110 Bearings Antifriction Unmounted |
| National Item Identification Number (NIIN) | 01-044-5148 (010445148) |
| NCB Code | USA (01) |
| Manufacturer | Caterpillar Inc, Timken Aerospace Inc |
| MRC | Criteria | Characteristic |
|---|---|---|
| ABKV | OUTSIDE DIAMETER | 3.5570 INCHES NOMINAL |
| ABMK | OVERALL WIDTH | 0.1580 INCHES NOMINAL |
| ABXV | BORE DIAMETER | 2.5020 INCHES NOMINAL |
| FEAT | SPECIAL FEATURES | GROUND FINSIH; CHAMFER 0.0300 IN. MIN TO 0.0450 MAX BY 45.0 DEGREES ON OD OF ONE SIDE |
| MATT | MATERIAL | STEEL COMP E52100 OVERALL |
| MDCL | MATERIAL DOCUMENT AND CLASSIFICATION | 66,AISI/SAE E52100 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| STYL | STYLE DESIGNATOR | FLAT RACE SURFACE |
| Relevant Components for NSN - 3110-01-044-5148, 3110010445148 | ||||
| 3110-00-003-9270 (3110000039270) | 3120-00-948-5325 (3120009485325) | 3120-01-281-8447 (3120012818447) | 3120-00-432-7549 (3120004327549) | |
| 3120-12-347-5626 (3120123475626) | 3120-00-190-4518 (3120001904518) | 3110-01-606-7510 (3110016067510) | 3110-01-400-6136 (3110014006136) | |
| 3110-00-100-3617 (3110001003617) | 3120-00-174-6371 (3120001746371) | 3110-01-556-1019 (3110015561019) | 3120-01-104-8486 (3120011048486) | |
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