The Bearing,roller,tapered, cataloged under National Stock Number 3110-01-038-0397, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is The Timken Corporation. Government technical data includes 13 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-038-0397 |
| Primary Part Number | 45291-45221 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Retainer Fabrication Method | PRESSED |
| Lubrication Material | LUBRICANT |
| Cup Width | 0.9375 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, NORMAL ANGLE |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Overall Outside Diameter | 4.1250 INCHES NOMINAL IN |
| Backface Corner Radius | 0.0300 INCHES NOMINAL IN |
| Cone Corner Radius | 0.2500 INCHES NOMINAL IN |
| Standout Width | 0.2500 INCHES NOMINAL IN |
| Cone Width | 1.2188 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 2.2500 INCHES NOMINAL IN |
| Material | STEEL COMP E52100 OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 45291-45221 PRIMARY | The Timken Corporation (USA) |
NSN 3110-01-038-0397 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-038-0397 has 1 manufacturer part number on file: 45291-45221 (The Timken Corporation).
Key specifications for 45291-45221: Retainer Fabrication Method: PRESSED; Lubrication Material: LUBRICANT; Cup Width: 0.9375 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, NORMAL ANGLE. 13 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.