The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-01-126-1291, 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 4 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 3110-01-126-1291 |
| Primary Part Number | JHM522610 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | CANCELLED |
| Style Designator | NORMAL ANGLE |
| Outside Diameter | 179.98 MILLIMETERS MINIMUM AND 180.00 MILLIMETERS MAXIMUM MM |
| Backface Corner Radius | 2.50 MILLIMETERS NOMINAL MM |
| Material | STEEL OVERALL |
| Acquisition Status | CANCELLED |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| JHM522610 | Ntn Bearing Corporation of America (USA) |
| JHM522610 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| 921685C1 | 5/9 Secondary reference U.S. Government activity |
| 3110011261291 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 10500802 | 5/9 Secondary reference Kraft Fluid Systems, Inc. |
| 921685C1 | 5/9 Secondary reference Komatsu American Intl Co |
NSN 3110-01-126-1291 is a Cup,tapered Roller Bearing, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: cancelled.
NSN 3110-01-126-1291 has 2 manufacturer part numbers on file: JHM522610 (Ntn Bearing Corporation of America), JHM522610 (The Timken Corporation).
1 possible match (shared part number, not a government interchangeability claim): 5305-01-187-0484. Verify interchangeability with system specifications before substitution.
Key specifications for JHM522610: Style Designator: NORMAL ANGLE; Overall Width: 38.00 MILLIMETERS NOMINAL MM; Outside Diameter: 179.98 MILLIMETERS MINIMUM AND 180.00 MILLIMETERS MAXIMUM MM; Backface Corner Radius: 2.50 MILLIMETERS NOMINAL MM. 4 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.
NSN 3110-01-126-1291 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.
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.