The Bearing,ball,annular, cataloged under National Stock Number 3110-01-321-2520, is classified within Federal Supply Class 3110 (Bearings, Antifriction, Unmounted) of the Bearings group. Government technical data includes 12 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3110-01-321-2520 |
| Item Name | Bearing,ball,annular |
| FSC / FSG | 3110 / 31 — Bearings, Antifriction, Unmounted |
| Status | ACTIVE |
| Outer Ring Width | 1.0000 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN |
| Surface Finish | GROUND |
| Style Designator | SINGLE ROW BALL, EXTERNAL ALIGNING RING, INNER RING EXTENDED BOTH SIDES, WITH SETSCREW IN INNER RING |
| Overall Outside Diameter | 3.1406 INCHES NOMINAL IN |
| Bore Shape | STRAIGHT |
| Load Direction | RADIAL |
| Alignment Type | SELF-ALIGNING |
| Bore Diameter | 1.4375 INCHES NOMINAL IN |
| Material | STEEL INNER RING |
| Material | RUBBER SYNTHETIC SEAL |
| Self-Alignment Location | INTERNAL |
| Inner Ring Width | 1.6875 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| AR-2-17C | 3/9 Design control — primary reference Morse Industrial Corp Sealmaster Bearing Div Sub of Emerson Electric Co |
| 40105 | 5/9 Secondary reference Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc |
NSN 3110-01-321-2520 is a Bearing,ball,annular, classified under FSC 3110, Bearings, Antifriction, Unmounted. Status: active.
Key specifications for 3110-01-321-2520: Outer Ring Width: 1.0000 INCHES MINIMUM AND 1.0100 INCHES MAXIMUM IN; Surface Finish: GROUND; Style Designator: SINGLE ROW BALL, EXTERNAL ALIGNING RING, INNER RING EXTENDED BOTH SIDES, WITH SETSCREW IN INNER RING; Overall Outside Diameter: 3.1406 INCHES NOMINAL IN. 12 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.