The Bushing,sleeve, cataloged under National Stock Number 3120-00-554-4820, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 13 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-00-554-4820 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES RIGHT END SURFACE OF BODY |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE LEFT FLANGE BODY CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Flange Outside Diameter | 0.3100 INCHES NOMINAL IN |
| Body Outside Diameter | 0.2520 INCHES MINIMUM AND 0.2530 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.1240 INCHES MINIMUM AND 0.1250 INCHES MAXIMUM IN |
| Flange Width | 0.0300 INCHES MINIMUM AND 0.0320 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 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 |
|---|---|
| 19721 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3120-00-554-4820 is a Bushing,sleeve, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5945-01-218-8194. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-00-554-4820: Surface Finish: 63.0 MICROINCHES RIGHT END SURFACE OF BODY; Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE LEFT FLANGE BODY CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER. 13 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.