The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-128-8043, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 14 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-128-8043 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-C-320,CLASS2,TYPE1 FED SPEC 2ND TREATMENT RESPONSE INNER MEMBER |
| Surface Treatment Document and Classification | QQ-P-416,CLASS2,TYPE1 FED SPEC 1ST TREATMENT RESPONSE OUTER RACE MEMBER |
| Inner Member Width | 0.3380 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN |
| Outer Member Width | 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN |
| Style Designator | WITHOUT INSERT OR LINER |
| Material Document and Classification | MIL-S-7420 MIL SPEC 2ND MATERIAL RESPONSE INNER MEMBER |
| Material Document and Classification | QQ-C-465 FED SPEC 1ST MATERIAL RESPONSE OUTER RACE MEMBER |
| Lubrication Feature | GROOVE OUTER RACE MEMBER |
| Surface Treatment | CADMIUM OUTER RACE MEMBER |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Bore Diameter | 0.2495 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Material | STEEL INNER MEMBER |
| Material | COPPER ALLOY 642 OUTER RACE MEMBER |
| Outer Member Outside Diameter | 0.6870 INCHES MINIMUM AND 0.6875 INCHES MAXIMUM 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 |
|---|---|
| 8121222-10 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3120-01-128-8043 is a Bearing,plain,self-Aligning, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
Key specifications for 3120-01-128-8043: Surface Treatment Document and Classification: QQ-C-320,CLASS2,TYPE1 FED SPEC 2ND TREATMENT RESPONSE INNER MEMBER; Surface Treatment Document and Classification: QQ-P-416,CLASS2,TYPE1 FED SPEC 1ST TREATMENT RESPONSE OUTER RACE MEMBER; Inner Member Width: 0.3380 INCHES MINIMUM AND 0.3430 INCHES MAXIMUM IN; Outer Member Width: 0.2450 INCHES MINIMUM AND 0.2550 INCHES MAXIMUM IN. 14 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.