The Bearing,sleeve, cataloged under National Stock Number 3120-00-554-2275, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Grimes Aerospace Company. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-554-2275 |
| Primary Part Number | A5439 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Grimes Aerospace Company |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.2490 INCHES MINIMUM AND 0.2500 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 1 TYPE AND A COMPOSITION |
| Material | COPPER ALLOY OVERALL |
| Material | OIL LUBRICATING LUBRICATION |
| 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 |
|---|---|
| A5439 PRIMARY | Grimes Aerospace Company (USA) |
| Reference | Meaning |
|---|---|
| P576-16 | 5/1 Secondary reference U.s. Graphite Corporation |
| A6944-2 | 7/2 Vendor item drawing reference Grimes Aerospace Company |
NSN 3120-00-554-2275 is a Bearing,sleeve, manufactured by Grimes Aerospace Company, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-554-2275 has 1 manufacturer part number on file: A5439 (Grimes Aerospace Company).
Key specifications for A5439: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Material Document and Classification: MIL-B-5697,TY 1,COMP A MIL SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.