The Bearing Half,sleeve, cataloged under National Stock Number 3120-01-490-4608, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-490-4608 |
| Item Name | Bearing Half,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES OVERALL |
| Corner Shape | CHAMFERED ALL CORNERS |
| Style Designator | HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | UNABLE TO DECODE |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| 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 |
|---|---|
| 4D09731-001 | 3/2 Design control — primary reference U.S. Government activity |
| 6510E71 | D/9 Drawing number reference only U.S. Government activity |
| 6510E71FN35 | 5/2 Secondary reference U.S. Government activity |
| 4D09731 | D/9 Drawing number reference only U.S. Government activity |
NSN 3120-01-490-4608 is a Bearing Half,sleeve, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3040-01-490-4923, 5305-01-491-0576. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-01-490-4608: Surface Finish: 125.0 MICROINCHES OVERALL; Corner Shape: CHAMFERED ALL CORNERS; Style Designator: HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES; Material Document and Classification: UNABLE TO DECODE. 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.