The Bushing,sleeve, cataloged under National Stock Number 3120-01-133-4530, 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 5 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-133-4530 |
| Primary Part Number | ST4M144-05003 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.4360 INCHES MINIMUM AND 0.4365 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 0.3125 INCHES MINIMUM AND 0.3135 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 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 |
|---|---|
| ST4M144-05003 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M144-05003 | 5/1 Secondary reference All Power Manufacturing Co. |
| ST4M144-05003 | 5/1 Secondary reference Mayday Manufacturing Co. |
| ST4M144-05003 | 5/9 Secondary reference Avalon Machine Products Inc |
| 10108044 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST4M144-05003 | 5/1 Secondary reference Reid Products Inc. Dba Reid Products Inc |
NSN 3120-01-133-4530 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-133-4530 has 1 manufacturer part number on file: ST4M144-05003 (The Boeing Company Div Defense).
Key specifications for ST4M144-05003: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.4360 INCHES MINIMUM AND 0.4365 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Overall Length: 0.3480 INCHES MINIMUM AND 0.3530 INCHES MAXIMUM IN. 5 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.