The Cup,tapered Roller Bearing, cataloged under National Stock Number 3110-00-100-0628, 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 5 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-100-0628 |
| Primary Part Number | A2126 |
| Item Name | Cup,tapered Roller Bearing |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | The Timken Corporation |
| Status | ACTIVE |
| Style Designator | NORMAL ANGLE |
| Outside Diameter | 1.2595 INCHES NOMINAL IN |
| Backface Corner Radius | 0.0460 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 |
|---|---|
| A2126 PRIMARY | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| 11388A | 5/9 Secondary reference Brinkley Technology Group Llc Dba Hercules Manufacturing |
| 11388A | 5/9 Secondary reference Hercules Engine Co Inc |
| 10390975 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| RL15-5CUP | 5/9 Secondary reference Lord Corporation Dba Lord Corp |
| FF-B-187 | 4/1 Identification reference U.S. Government activity |
NSN 3110-00-100-0628 is a Cup,tapered Roller Bearing, manufactured by The Timken Corporation, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-100-0628 has 1 manufacturer part number on file: A2126 (The Timken Corporation).
2 possible matches (shared part number, not a government interchangeability claim): 9540-01-126-8907, 7021-01-683-5695. Verify interchangeability with system specifications before substitution.
Key specifications for A2126: Style Designator: NORMAL ANGLE; Overall Width: 0.3125 INCHES NOMINAL IN; Outside Diameter: 1.2595 INCHES NOMINAL IN; Backface Corner Radius: 0.0460 INCHES NOMINAL IN. 5 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.