The Bushing,sleeve, cataloged under National Stock Number 3120-01-129-2222, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 4 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-129-2222 |
| Primary Part Number | 4M139BC8-12 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Outside Diameter | 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.6267 INCHES MINIMUM AND 0.6275 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.4935 INCHES MINIMUM AND 0.4950 INCHES MAXIMUM IN |
| Flange Width | 0.0600 INCHES MINIMUM AND 0.0620 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 |
|---|---|
| 4M139BC8-12 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 10130625 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| 4M139BC8-12 | C/1 Advisory reference — outside the item-of-supply concept Avalon Machine Products Inc |
| 4M139BC8-12 | C/1 Advisory reference — outside the item-of-supply concept Reid Products Inc. Dba Reid Products Inc |
| ST4M139BC8-12 | 5/9 Secondary reference The Boeing Company Div Defense |
| 4M139BC8-12 | C/1 Advisory reference — outside the item-of-supply concept All Power Manufacturing Co. |
| 4M139BC8-12 | C/1 Advisory reference — outside the item-of-supply concept Mayday Manufacturing Co. |
NSN 3120-01-129-2222 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-129-2222 has 1 manufacturer part number on file: 4M139BC8-12 (The Boeing Company Div Defense).
Key specifications for 4M139BC8-12: Flange Outside Diameter: 0.7400 INCHES MINIMUM AND 0.7600 INCHES MAXIMUM IN; Body Outside Diameter: 0.6267 INCHES MINIMUM AND 0.6275 INCHES MAXIMUM IN; Overall Length: 0.1750 INCHES MINIMUM AND 0.1870 INCHES MAXIMUM IN; Body Inside Diameter: 0.4935 INCHES MINIMUM AND 0.4950 INCHES MAXIMUM IN. 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.