The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-100-4244, 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 10 specifications, cited from the U.S. Government catalog. The record lists 8 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-100-4244 |
| Primary Part Number | 661-652 |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Cup Width | 1.2500 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, NORMAL ANGLE |
| Overall Outside Diameter | 6.0000 INCHES NOMINAL IN |
| Backface Corner Radius | 0.1250 INCHES NOMINAL IN |
| Cone Corner Radius | 0.1400 INCHES NOMINAL IN |
| Standout Width | 0.3750 INCHES NOMINAL IN |
| Cone Width | 1.6250 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 3.1250 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| 661-652 PRIMARY | The Timken Corporation (USA) |
| 6293414 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| 661-652 PRIMARY | Federal-Mogul Corp Government Sales Dept (USA) |
| 661-652 | The Timken Company (FRA) |
| K661K652 | Skf France (FRA) |
| 661-652 PRIMARY | Rbc Bearings Incorporated Div West Trenton Division (USA) |
| A3312 PRIMARY | The Timken Corporation (USA) |
| 488557P8 PRIMARY | General Electric Company (USA) |
| Reference | Meaning |
|---|---|
| 661-652 | 5/9 Secondary reference Tyson Bearing Co Div Skf Industries Inc |
| FF-B-187A | 4/1 Identification reference U.S. Government activity |
NSN 3110-00-100-4244 is a Bearing,roller,tapered, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-100-4244 has 8 manufacturer part numbers on file: 661-652 (The Timken Corporation), 6293414 (U S Army Tank Automotive Command Amsta-Im-Mm), 661-652 (Federal-Mogul Corp Government Sales Dept), 661-652 (The Timken Company), K661K652 (Skf France) and 3 more.
1 possible match (shared part number, not a government interchangeability claim): 4820-01-200-2263. Verify interchangeability with system specifications before substitution.
Key specifications for 661-652: Cup Width: 1.2500 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, NORMAL ANGLE; Overall Width: 1.6250 INCHES NOMINAL IN; Overall Outside Diameter: 6.0000 INCHES NOMINAL IN. 10 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.