The Bearing,sleeve, cataloged under National Stock Number 3120-01-159-4521, 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 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-159-4521 |
| Primary Part Number | AS12891 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Corner Shape | RELIEF GROOVE ALL CORNERS |
| Right Flange Width | 0.0980 INCHES MINIMUM AND 0.1180 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.7360 INCHES NOMINAL IN |
| Style Designator | SEGMENTED, EXTERNAL FLANGES BOTH ENDS |
| Body Inside Diameter | 0.5510 INCHES NOMINAL IN |
| Right Flange Outside Diameter | 0.8150 INCHES NOMINAL IN |
| Left Flange Outside Diameter | 0.8150 INCHES NOMINAL IN |
| Left Flange Width | 0.0980 INCHES MINIMUM AND 0.1180 INCHES MAXIMUM IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| 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 |
|---|---|
| AS12891 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| AS12891 | 3/9 Design control — primary reference Society of British Aerospace Companies Ltd (sbac) |
NSN 3120-01-159-4521 is a Bearing,sleeve, manufactured by Sae International Dba Sae International, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-159-4521 has 1 manufacturer part number on file: AS12891 (Sae International Dba Sae International).
Key specifications for AS12891: Corner Shape: RELIEF GROOVE ALL CORNERS; Right Flange Width: 0.0980 INCHES MINIMUM AND 0.1180 INCHES MAXIMUM IN; Body Outside Diameter: 0.7360 INCHES NOMINAL IN; Style Designator: SEGMENTED, EXTERNAL FLANGES BOTH ENDS. 9 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.