The Bearing,sleeve, cataloged under National Stock Number 3120-00-348-7983, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 29 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-00-348-7983 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 100.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE |
| Surface Finish | 20.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 100.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE |
| Surface Finish | 100.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 100.0 MICROINCHES LEFT END SURFACE OF RIGHT FLANGE |
| Surface Finish | 100.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF LEFT FLANGE |
| Surface Finish | 100.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF RIGHT FLANGE |
| Surface Finish | 100.0 MICROINCHES RIGHT END SURFACE OF BODY AND FLANGE |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | ROUND INSIDE LEFT CORNER |
| Corner Shape | ROUND RIGHT FLANGE BODY CORNER |
| Corner Shape | SQUARE RIGHT FLANGE OUTSIDE LEFT CORNER |
| Corner Shape | ROUND LEFT FLANGE BODY CORNER |
| Corner Shape | ROUND INSIDE RIGHT CORNER |
| Right Flange Width | 0.0975 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM IN |
| Body Outside Diameter | 2.5610 INCHES MINIMUM AND 2.5620 INCHES MAXIMUM IN |
| Style Designator | SEGMENTED, EXTERNAL FLANGES BOTH ENDS |
| Body Inside Diameter | 2.3160 INCHES MINIMUM AND 2.3170 INCHES MAXIMUM IN |
| Right Flange Outside Diameter | 3.0000 INCHES NOMINAL IN |
| Lubricant Accommodation Style | GROOVED STRAIGHT AND CIRCULAR |
| Left Flange Outside Diameter | 3.0000 INCHES NOMINAL IN |
| Left Flange Width | 0.0975 INCHES MINIMUM AND 0.0990 INCHES MAXIMUM IN |
| Antirotation/lubrication Type and Quantity | 4 HOLE AND 4 SLOT |
| Material | GREASE LUBRICATION |
| Material | COPPER ALLOY OVERALL |
| Slot Width | 0.0800 INCHES MINIMUM AND 0.1000 INCHES MAXIMUM FIRST IN |
| Slot Length | 1.2870 INCHES MINIMUM AND 1.2880 INCHES MAXIMUM FIRST 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 |
|---|---|
| 6-51500-2 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-00-348-7983 is a Bearing,sleeve, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5120-01-619-6605. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-00-348-7983: Surface Finish: 100.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE; Surface Finish: 20.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 100.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE; Surface Finish: 100.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY. 29 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.