The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-01-239-1367, 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3110-01-239-1367 |
| Primary Part Number | 15520B |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Flange Outside Diameter | 2.4022 INCHES NOMINAL IN |
| Style Designator | NORMAL ANGLE, FLANGED |
| Flange Width | 0.1563 INCHES NOMINAL IN |
| Outer Ring Outside Diameter | 2.2500 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| 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 |
|---|---|
| 15520B PRIMARY | The Timken Corporation (USA) |
| 6503-86 PIECE 106 | Huntington Ingalls Inc Div Newport News Shipbuilding (USA) |
| Reference | Meaning |
|---|---|
| FF-B-187 | 4/1 Identification reference U.S. Government activity |
NSN 3110-01-239-1367 is a Cup,tapered Roller Bearing, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-01-239-1367 has 2 manufacturer part numbers on file: 15520B (The Timken Corporation), 6503-86 PIECE 106 (Huntington Ingalls Inc Div Newport News Shipbuilding).
Key specifications for 15520B: Flange Outside Diameter: 2.4022 INCHES NOMINAL IN; Style Designator: NORMAL ANGLE, FLANGED; Overall Width: 0.5313 INCHES NOMINAL IN; Flange Width: 0.1563 INCHES NOMINAL 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.