The Bearing,sleeve, cataloged under National Stock Number 3120-01-221-4239, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-221-4239 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 1.5010 INCHES MINIMUM AND 1.5015 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | BEARIUM B-8,FSCM 85373 MFR REF SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 1.2520 INCHES MINIMUM AND 1.2550 INCHES MAXIMUM IN |
| Lubricant Accommodation Style | GROOVED STRAIGHT AND CIRCULAR |
| Material | GREASE LUBRICATION |
| 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 |
|---|---|
| SSN637-505-2143931 PIECE 6 | 5/2 Secondary reference U.S. Government activity |
| 77656-31X13 PIECE 6 | 3/2 Design control — primary reference U.S. Government activity |
| 609-2127819 PIECE 19 | 5/9 Secondary reference U.S. Government activity |
| 609-2127819 PIE | C/1 Advisory reference — outside the item-of-supply concept U.S. Government activity |
NSN 3120-01-221-4239 is a Bearing,sleeve, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
Key specifications for 3120-01-221-4239: Surface Finish: 63.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 63.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 1.5010 INCHES MINIMUM AND 1.5015 INCHES MAXIMUM IN. 10 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.