The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-006-9145, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. Government technical data includes 17 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 3120-01-006-9145 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Inner Member Width | 0.5570 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN |
| Outer Member Width | 0.4320 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN |
| Style Designator | WITHOUT INSERT OR LINER WITH STAKING GROOVE |
| Material Document and Classification | MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION |
| Lubrication Feature | PERFORATION OUTER RACE MEMBER |
| Lubrication Feature | PERFORATION INNER MEMBER |
| Lubrication Feature | GROOVE EXTERNAL OUTER MEMBER |
| Lubrication Feature | GROOVE INTERNAL OUTER MEMBER |
| Lubrication Feature | GROOVE INTERNAL INNER MEMBER |
| Surface Treatment | CADMIUM OUTER RACE MEMBER |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Static Radial Load Rating | 15700 POUNDS LBS |
| Bore Diameter | 0.5617 INCHES MINIMUM AND 0.5625 INCHES MAXIMUM IN |
| Material | COPPER ALLOY OUTER RACE MEMBER |
| Material | GREASE LUBRICATION |
| Material | STEEL COMP E52100 INNER MEMBER |
| Outer Member Outside Diameter | 1.0929 INCHES MINIMUM AND 1.0937 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 |
|---|---|
| SAEAS21154 | 5/1 Secondary reference U.S. Government activity |
| MS21154B9 | 2/2 Government specification standardization U.S. Government activity |
| NAS77 | 5/9 Secondary reference U.S. Government activity |
| 12-4200-09 | 5/9 Secondary reference Rexnord Industries, Llc Div Aerosspace Bearing Operation |
NSN 3120-01-006-9145 is a Bearing,plain,self-Aligning, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 4720-01-440-4582. Verify interchangeability with system specifications before substitution.
Key specifications for 3120-01-006-9145: Inner Member Width: 0.5570 INCHES MINIMUM AND 0.5620 INCHES MAXIMUM IN; Outer Member Width: 0.4320 INCHES MINIMUM AND 0.4420 INCHES MAXIMUM IN; Style Designator: WITHOUT INSERT OR LINER WITH STAKING GROOVE; Material Document and Classification: MIL-G-23827 MIL SPEC SINGLE MATERIAL RESPONSE LUBRICATION. 17 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.