The Bushing,sleeve, cataloged under National Stock Number 3120-01-184-7771, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is All Power Manufacturing Co.. Government technical data includes 11 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through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 3120-01-184-7771 |
| Primary Part Number | ST4M166-9-308 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | All Power Manufacturing Co. |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.7485 INCHES MINIMUM AND 0.7490 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 | 0.5625 INCHES MINIMUM AND 0.5635 INCHES MAXIMUM IN |
| Specification/standard Data | 76301-ST4-166 MANUFACTURERS STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Antirotation/lubrication Type and Quantity | 2 HOLE |
| Material | STEEL COMP 630 OVERALL |
| Hole Diameter | 0.0780 INCHES MINIMUM AND 0.0830 INCHES MAXIMUM FIRST 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 |
|---|---|
| ST4M166-9-308 PRIMARY | All Power Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| ST4M166-9-308 | 5/9 Secondary reference The Boeing Company Div Defense |
| ST4M166-9-308 | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| ST4M166-9-308 | 5/9 Secondary reference U.S. Government activity |
| ST4M166-9-308 | 5/9 Secondary reference Avalon Machine Products Inc |
| ST4M166-9-308 | 5/9 Secondary reference Mayday Manufacturing Co. |
NSN 3120-01-184-7771 is a Bushing,sleeve, manufactured by All Power Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-184-7771 has 1 manufacturer part number on file: ST4M166-9-308 (All Power Manufacturing Co.).
Key specifications for ST4M166-9-308: Surface Finish: 32.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.7485 INCHES MINIMUM AND 0.7490 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES. 11 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.