The Bushing,sleeve, cataloged under National Stock Number 3120-01-160-0804, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-160-0804 |
| Primary Part Number | 523-5256781-13 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OVERALL |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 2.3750 INCHES NOMINAL IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | QQ-C-390 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 1.8750 INCHES MINIMUM AND 1.8760 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 941 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 |
|---|---|
| 523-5256781-13 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5256781-13 | 5/9 Secondary reference U.S. Government activity |
| 523-5256781 PIECE 13 | 5/9 Secondary reference Naval Sea Systems Command |
NSN 3120-01-160-0804 is a Bushing,sleeve, manufactured by Naval Sea Systems Command, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-160-0804 has 1 manufacturer part number on file: 523-5256781-13 (Naval Sea Systems Command).
Key specifications for 523-5256781-13: Surface Finish: 63.0 MICROINCHES OVERALL; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 2.3750 INCHES NOMINAL IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 7 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.