The Bushing,sleeve, cataloged under National Stock Number 3120-01-477-5797, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Avalon Machine Products Inc. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 5 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-477-5797 |
| Primary Part Number | ST4M166-6-0075 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Avalon Machine Products Inc |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Body Outside Diameter | 0.4985 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN |
| Criticality Code Justification | AGAV |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.3750 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| 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 | Y |
| Part Number | Manufacturer |
|---|---|
| ST4M166-6-0075 PRIMARY | Avalon Machine Products Inc (USA) |
| ST4M166-6-0075 PRIMARY | All Power Manufacturing Co. (USA) |
| ST4M166-6-0075 PRIMARY | Mayday Manufacturing Co. (USA) |
| ST4M166-6-0075 PRIMARY | Reid Products Inc. Dba Reid Products Inc (USA) |
| ST4M166-6-0075 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M166-6-0075 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-01-477-5797 is a Bushing,sleeve, manufactured by Avalon Machine Products Inc, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-477-5797 has 5 manufacturer part numbers on file: ST4M166-6-0075 (Avalon Machine Products Inc), ST4M166-6-0075 (All Power Manufacturing Co.), ST4M166-6-0075 (Mayday Manufacturing Co.), ST4M166-6-0075 (Reid Products Inc. Dba Reid Products Inc), ST4M166-6-0075 (The Boeing Company Div Defense).
Key specifications for ST4M166-6-0075: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Body Outside Diameter: 0.4985 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN; Criticality Code Justification: AGAV. 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.