The Bushing,sleeve, cataloged under National Stock Number 3120-01-445-4955, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 4 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-445-4955 |
| Primary Part Number | 7C9-05241 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Flange Outside Diameter | 4.6200 INCHES NOMINAL IN |
| Body Outside Diameter | 3.1250 INCHES NOMINAL IN |
| Body Inside Diameter | 2.5000 INCHES NOMINAL IN |
| Material | STEEL 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 |
|---|---|
| 7C9-05241 PRIMARY | Lake Shore Systems, Inc. (USA) |
| 7D3-04544-49 | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SF 2 1/2 | 5/9 Secondary reference Emerson Electric Co Browning Mfg Div |
| SF-2.50 BORE | 5/9 Secondary reference Emerson Electric Co Browning Mfg Div |
| SF-2.50" BORE | C/1 Advisory reference — outside the item-of-supply concept Gates Corporation |
NSN 3120-01-445-4955 is a Bushing,sleeve, manufactured by Lake Shore Systems, Inc., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-445-4955 has 2 manufacturer part numbers on file: 7C9-05241 (Lake Shore Systems, Inc.), 7D3-04544-49 (Lake Shore Systems, Inc.).
Key specifications for 7C9-05241: Flange Outside Diameter: 4.6200 INCHES NOMINAL IN; Body Outside Diameter: 3.1250 INCHES NOMINAL IN; Body Inside Diameter: 2.5000 INCHES NOMINAL IN; Material: STEEL OVERALL. 4 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.