The Bushing,sleeve, cataloged under National Stock Number 3120-01-286-8577, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Mayday Manufacturing Co.. Government technical data includes 9 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-286-8577 |
| Primary Part Number | ST4M192C12-34 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Mayday Manufacturing Co. |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 1.1875 INCHES NOMINAL IN |
| Body Outside Diameter | 1.0013 INCHES MINIMUM AND 1.0028 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | AMS5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.7435 INCHES MINIMUM AND 0.7450 INCHES MAXIMUM IN |
| Flange Width | 0.1248 INCHES MINIMUM AND 0.1250 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 |
|---|---|
| ST4M192C12-34 PRIMARY | Mayday Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| 10313602 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
| ST4M192C12-34 | 5/9 Secondary reference The Boeing Company Div Defense |
NSN 3120-01-286-8577 is a Bushing,sleeve, manufactured by Mayday Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-286-8577 has 1 manufacturer part number on file: ST4M192C12-34 (Mayday Manufacturing Co.).
1 possible match (shared part number, not a government interchangeability claim): 5120-01-657-5194. Verify interchangeability with system specifications before substitution.
Key specifications for ST4M192C12-34: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-S-5002 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 1.1875 INCHES NOMINAL IN; Body Outside Diameter: 1.0013 INCHES MINIMUM AND 1.0028 INCHES MAXIMUM IN. 9 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.