The Bearing,sleeve, cataloged under National Stock Number 3120-01-321-8776, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 20 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-321-8776 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE INSIDE RIGHT 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 |
| Corner Shape | UNDERCUT LEFT FLANGE BODY CORNER |
| Flange Outside Diameter | 0.8550 INCHES MINIMUM AND 0.8750 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.5007 INCHES MINIMUM AND 0.5017 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | MIL-B-85560 MIL SPEC SINGLE MATERIAL RESPONSE INSIDE DIAMETER SURFACE OF BODY |
| Material Document and Classification | MIL-B-85560 MIL SPEC SINGLE MATERIAL RESPONSE LEFT END SURFACE OF BODY AND FLANGE |
| Body Inside Diameter | 0.3755 INCHES MINIMUM AND 0.3765 INCHES MAXIMUM IN |
| Flange Width | 0.0575 INCHES MINIMUM AND 0.0625 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE INSIDE DIAMETER SURFACE OF BODY |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE LEFT END SURFACE OF BODY AND FLANGE |
| Material | GLASS FIBER AND RESIN SYNTHETIC OR PLASTIC POLYAMIDE NYLON AND RESIN SYNTHETIC OUTSIDE DIAMETER SURFACE OF BODY |
| Material | GLASS FIBER AND RESIN SYNTHETIC OR PLASTIC POLYAMIDE NYLON AND RESIN SYNTHETIC OUTSIDE DIAMETER SURFACE OF FLANGE |
| Material | GLASS FIBER AND RESIN SYNTHETIC OR PLASTIC POLYAMIDE NYLON AND RESIN SYNTHETIC RIGHT END SURFACE OF BODY |
| Material | GLASS FIBER AND RESIN SYNTHETIC OR PLASTIC POLYAMIDE NYLON AND RESIN SYNTHETIC RIGHT END SURFACE OF LEFT FLANGE |
| 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 |
|---|---|
| M85560/2-06-008 | 2/2 Government specification standardization U.S. Government activity |
| MIL-B-85560/2 | 4/1 Identification reference U.S. Government activity |
NSN 3120-01-321-8776 is a Bearing,sleeve, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3120-01-358-0380. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-01-321-8776: Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE INSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE RIGHT CORNER; Corner Shape: SQUARE OUTSIDE LEFT CORNER. 20 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.