The Bushing,sleeve, cataloged under National Stock Number 3120-01-252-8057, 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-252-8057 |
| Primary Part Number | ST4M192C7-50 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Flange Outside Diameter | 0.6880 INCHES NOMINAL IN |
| Body Outside Diameter | 0.4636 INCHES MINIMUM AND 0.4648 INCHES MAXIMUM IN |
| Body Inside Diameter | 0.4310 INCHES MINIMUM AND 0.4325 INCHES MAXIMUM IN |
| Flange Width | 0.0600 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 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 |
|---|---|
| ST4M192C7-50 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M192C7-50 | 5/1 Secondary reference Mayday Manufacturing Co. |
| ST4M192C7-50 | 5/1 Secondary reference All Power Manufacturing Co. |
| ST4M192C7-50 | 5/1 Secondary reference Reid Products Inc. Dba Reid Products Inc |
NSN 3120-01-252-8057 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-252-8057 has 1 manufacturer part number on file: ST4M192C7-50 (The Boeing Company Div Defense).
Key specifications for ST4M192C7-50: Flange Outside Diameter: 0.6880 INCHES NOMINAL IN; Body Outside Diameter: 0.4636 INCHES MINIMUM AND 0.4648 INCHES MAXIMUM IN; Overall Length: 0.5620 INCHES NOMINAL IN; Body Inside Diameter: 0.4310 INCHES MINIMUM AND 0.4325 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.