The Bushing,sleeve, cataloged under National Stock Number 3120-01-477-5665, 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 11 specifications, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-477-5665 |
| Primary Part Number | 4M374BC9-012 |
| 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-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.6892 INCHES MINIMUM AND 0.6902 INCHES MAXIMUM IN |
| Criticality Code Justification | AGAV |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | ASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.5560 INCHES MINIMUM AND 0.5575 INCHES MAXIMUM IN |
| Surface Treatment | COPPER ALLOY OVERALL |
| Flange Width | 0.0600 INCHES MINIMUM AND 0.0640 INCHES MAXIMUM IN |
| Material | COPPER ALLOY 172 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 |
|---|---|
| 4M374BC9-012 PRIMARY | Mayday Manufacturing Co. (USA) |
| 4M374BC9-012 PRIMARY | All Power Manufacturing Co. (USA) |
| 4M374BC9-012 | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 4M374BC9-012 | 5/9 Secondary reference Avalon Machine Products Inc |
NSN 3120-01-477-5665 is a Bushing,sleeve, manufactured by Mayday Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-477-5665 has 3 manufacturer part numbers on file: 4M374BC9-012 (Mayday Manufacturing Co.), 4M374BC9-012 (All Power Manufacturing Co.), 4M374BC9-012 (The Boeing Company Div Defense).
Key specifications for 4M374BC9-012: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.8020 INCHES MINIMUM AND 0.8220 INCHES MAXIMUM IN; Body Outside Diameter: 0.6892 INCHES MINIMUM AND 0.6902 INCHES MAXIMUM IN. 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.