The Bearing,sleeve, cataloged under National Stock Number 3120-01-184-2020, 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 10 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-184-2020 |
| Primary Part Number | ST4M167P4-111 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Mayday Manufacturing Co. |
| Status | ACTIVE |
| Surface Finish | 8.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-C-320,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY |
| Body Outside Diameter | 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | AMS5643,COND H-1025 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.2500 INCHES MINIMUM AND 0.2510 INCHES MAXIMUM IN |
| Specification/standard Data | 76301-ST4-167 MANUFACTURERS STANDARD |
| Surface Treatment | CHROMIUM OUTSIDE DIAMETER SURFACE OF BODY |
| 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 |
|---|---|
| ST4M167P4-111 PRIMARY | Mayday Manufacturing Co. (USA) |
| ST4M167P4-111 PRIMARY | All Power Manufacturing Co. (USA) |
| ST4M167P4-111 | The Boeing Company Div Defense (USA) |
| ST4M167P4-111 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| Reference | Meaning |
|---|---|
| ST4M167P4-111 | 5/9 Secondary reference Avalon Machine Products Inc |
NSN 3120-01-184-2020 is a Bearing,sleeve, manufactured by Mayday Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-184-2020 has 4 manufacturer part numbers on file: ST4M167P4-111 (Mayday Manufacturing Co.), ST4M167P4-111 (All Power Manufacturing Co.), ST4M167P4-111 (The Boeing Company Div Defense), ST4M167P4-111 (Reid Products Inc. Dba Reid Products Inc).
Key specifications for ST4M167P4-111: Surface Finish: 8.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-C-320,CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY; Body Outside Diameter: 0.3740 INCHES MINIMUM AND 0.3745 INCHES MAXIMUM IN. 10 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.