The Bearing,roller,tapered, cataloged under National Stock Number 3110-00-923-8569, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. The manufacturer of record is Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic. Government technical data includes 10 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3110-00-923-8569 |
| Primary Part Number | M2691A |
| Item Name | Bearing,roller,tapered |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Manufacturer | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
| Status | ACTIVE |
| Cup Width | 0.9200 INCHES NOMINAL IN |
| Style Designator | STRAIGHT BORE, STEEP ANGLE |
| Overall Outside Diameter | 4.1333 INCHES NOMINAL IN |
| Backface Corner Radius | 0.1000 INCHES NOMINAL IN |
| Cone Corner Radius | 0.1000 INCHES NOMINAL IN |
| Standout Width | 0.3600 INCHES NOMINAL IN |
| Cone Width | 1.2500 INCHES NOMINAL IN |
| Standard Tolerance Designation | AFBMA CLASS 2 |
| Bore Diameter | 1.7711 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 |
|---|---|
| M2691A PRIMARY | Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic (USA) |
| HM905843HM905810 | The Timken Corporation (USA) |
| Reference | Meaning |
|---|---|
| M2691 | 5/9 Secondary reference Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic |
NSN 3110-00-923-8569 is a Bearing,roller,tapered, manufactured by Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
NSN 3110-00-923-8569 has 2 manufacturer part numbers on file: M2691A (Twin Disc, Incorporated Dba Twin Disc Mid-Atlantic), HM905843HM905810 (The Timken Corporation).
1 possible match (shared part number, not a government interchangeability claim): 4320-01-413-3697. Verify interchangeability with system specifications before substitution.
Key specifications for M2691A: Cup Width: 0.9200 INCHES NOMINAL IN; Style Designator: STRAIGHT BORE, STEEP ANGLE; Overall Width: 1.2800 INCHES NOMINAL IN; Overall Outside Diameter: 4.1333 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.