The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-01-140-6747, 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 6 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-140-6747 |
| Primary Part Number | SB3266-201 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Material Document and Classification | SB3266-201,78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN |
| Backface Corner Radius | 0.1300 INCHES MAXIMUM IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Material | STEEL AND CHROMIUM ALLOY OVERALL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | F |
| Part Number | Manufacturer |
|---|---|
| SB3266-201 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
| SB3266-201 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| 29520XX-2-397 | 5/1 Secondary reference The Timken Corporation |
NSN 3110-01-140-6747 is a Cup,tapered Roller Bearing, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-140-6747 has 2 manufacturer part numbers on file: SB3266-201 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp), SB3266-201 (The Timken Corporation).
Key specifications for SB3266-201: Style Designator: NORMAL ANGLE; Material Document and Classification: SB3266-201,78286 MFR REF SINGLE MATERIAL RESPONSE OVERALL; Overall Width: 0.7500 INCHES NOMINAL IN; Outside Diameter: 4.2500 INCHES MINIMUM AND 4.2510 INCHES MAXIMUM IN. 6 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.