The Bushing,sleeve, cataloged under National Stock Number 3120-01-481-2932, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Defense. Government technical data includes 9 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-481-2932 |
| Primary Part Number | 4M381BC7-029 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | MIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY |
| Body Outside Diameter | 0.5639 INCHES MINIMUM AND 0.5646 INCHES MAXIMUM IN |
| Criticality Code Justification | AGAV |
| Style Designator | SOLID, PLAIN, NO OUTSIDE FLANGES |
| Material Document and Classification | ASTM B196 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.4265 INCHES MINIMUM AND 0.4280 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM ALLOY OUTSIDE DIAMETER SURFACE OF BODY |
| 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 |
|---|---|
| 4M381BC7-029 PRIMARY | The Boeing Company Div Defense (USA) |
| 4M381BC7-029 | All Power Manufacturing Co. (USA) |
| 4M381BC7-029 | Mayday Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| 4M381BC7-029 | 5/9 Secondary reference Avalon Machine Products Inc |
NSN 3120-01-481-2932 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-481-2932 has 3 manufacturer part numbers on file: 4M381BC7-029 (The Boeing Company Div Defense), 4M381BC7-029 (All Power Manufacturing Co.), 4M381BC7-029 (Mayday Manufacturing Co.).
Key specifications for 4M381BC7-029: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-C-83488,TYPE II,CLASS 3 MIL SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY; Body Outside Diameter: 0.5639 INCHES MINIMUM AND 0.5646 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.