The Bearing,plain,self-Aligning, cataloged under National Stock Number 3120-01-488-4557, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 8 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-488-4557 |
| Primary Part Number | M81820/3-6 |
| Item Name | Bearing,plain,self-Aligning |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Inner Member Width | 0.4980 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN |
| Outer Member Width | 0.4010 INCHES MINIMUM AND 0.4110 INCHES MAXIMUM IN |
| Style Designator | WITH INSERT AND/OR LINER WITH STAKING GROOVE |
| Bore Diameter | 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Material | PLASTIC POLYTETRAFLUOROETHYLENE RACE LINER |
| Material | STEEL COMP XM-13 INNER MEMBER |
| Material | STEEL COMP 630 OUTER RACE MEMBER |
| Outer Member Outside Diameter | 0.8120 INCHES MINIMUM AND 0.8125 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 |
| Part Number | Manufacturer |
|---|---|
| M81820/3-6 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| M81820/3-6 | 3/9 Design control — primary reference U.S. Government activity |
NSN 3120-01-488-4557 is a Bearing,plain,self-Aligning, manufactured by Sae International Dba Sae International, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-488-4557 has 1 manufacturer part number on file: M81820/3-6 (Sae International Dba Sae International).
Key specifications for M81820/3-6: Inner Member Width: 0.4980 INCHES MINIMUM AND 0.5000 INCHES MAXIMUM IN; Outer Member Width: 0.4010 INCHES MINIMUM AND 0.4110 INCHES MAXIMUM IN; Style Designator: WITH INSERT AND/OR LINER WITH STAKING GROOVE; Bore Diameter: 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN. 8 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.