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 | ||||
| 3120-01-114-4519 (3120011144519) | 3120-01-221-5836 (3120012215836) | 3120-99-782-0886 (3120997820886) | 3110-01-104-8172 (3110011048172) | |
| 3110-01-499-4933 (3110014994933) | 3110-00-100-4158 (3110001004158) | 3120-01-497-5823 (3120014975823) | 3110-00-156-8100 (3110001568100) | |
| 3120-01-495-8412 (3120014958412) | 3110-01-586-5540 (3110015865540) | 3110-01-300-2426 (3110013002426) | 3110-00-156-6819 (3110001566819) | |
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