The Cone and Rollers,tapered Roller, cataloged under National Stock Number 3110-00-100-3663, 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-00-100-3663 |
| Primary Part Number | 74550 |
| Item Name | Cone and Rollers,tapered Roller |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Cone Corner Radius | 0.1406 INCHES NOMINAL IN |
| Cone Width | 1.9000 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 3.6250 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 |
|---|---|
| 74550 | Ntn Bearing Corporation of America (USA) |
| 74550 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| 19-11238 | 5/1 Secondary reference Curtiss-Wright Controls, Inc. Div Actuation Division |
| 74550 | 5/1 Secondary reference Federal-Mogul Corp Government Sales Dept |
| 2541P11 | 5/1 Secondary reference Taylor Machine Works Inc |
| 1943-251 | 5/1 Secondary reference Taylor Machine Works Inc |
| G587 | 5/9 Secondary reference Baker Intl Corp Eimco Mining Machinery Intl |
| 1943-251 | 5/1 Secondary reference Liftking Manufacturing Corp |
| FF-B-187 | 5/9 Secondary reference U.S. Government activity |
NSN 3110-00-100-3663 is a Cone and Rollers,tapered Roller, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-100-3663 has 2 manufacturer part numbers on file: 74550 (Ntn Bearing Corporation of America), 74550 (The Timken Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 1610-00-483-7000, 4820-01-286-9776. Verify interchangeability with system specifications before substitution.
Key specifications for 74550: Style Designator: NORMAL ANGLE; Cone Corner Radius: 0.1406 INCHES NOMINAL IN; Cone Width: 1.9000 INCHES NOMINAL IN; Standard Tolerance Designation: AFBMA CLASS 2. 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.