The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-285-9103, 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10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-285-9103 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Status | ACTIVE |
| Inner Member Width | 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Hardness Rating | 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER |
| Hardness Rating | 20.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER |
| Outer Member Width | 0.5880 INCHES MINIMUM AND 0.5980 INCHES MAXIMUM IN |
| Style Designator | WITHOUT INSERT OR LINER |
| Surface Treatment | CHROMIUM INNER MEMBER |
| Bore Diameter | 0.7495 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN |
| Material | STEEL COMP E52100 INNER MEMBER |
| Material | STEEL COMP 410 OUTER RACE MEMBER |
| Outer Member Outside Diameter | 1.4370 INCHES MINIMUM AND 1.4375 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 |
|---|---|
| RSST-12 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-01-285-9103 is a Bearing,plain,self-Aligning, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
Key specifications for 3120-01-285-9103: Inner Member Width: 0.7450 INCHES MINIMUM AND 0.7500 INCHES MAXIMUM IN; Hardness Rating: 57.0 ROCKWELL C MINIMUM AND 61.0 ROCKWELL C MAXIMUM INNER MEMBER; Hardness Rating: 20.0 ROCKWELL C MINIMUM AND 24.0 ROCKWELL C MAXIMUM OUTER RACE MEMBER; Outer Member Width: 0.5880 INCHES MINIMUM AND 0.5980 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.