The Bushing,sleeve, cataloged under National Stock Number 3120-01-477-5706, 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 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-477-5706 |
| Primary Part Number | 4M374BC18-020 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | All Power 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 | 1.4900 INCHES MINIMUM AND 1.5100 INCHES MAXIMUM IN |
| Body Outside Diameter | 1.3141 INCHES MINIMUM AND 1.3151 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 | 1.1155 INCHES MINIMUM AND 1.1170 INCHES MAXIMUM IN |
| Surface Treatment | COPPER ALLOY OVERALL |
| Flange Width | 0.0920 INCHES MINIMUM AND 0.0960 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 |
|---|---|
| 4M374BC18-020 PRIMARY | All Power Manufacturing Co. (USA) |
| 4M374BC18-020 | The Boeing Company Div Defense (USA) |
| 4M374BC18-020 PRIMARY | Mayday Manufacturing Co. (USA) |
| Reference | Meaning |
|---|---|
| 4M374BC18-020 | 5/9 Secondary reference Avalon Machine Products Inc |
NSN 3120-01-477-5706 is a Bushing,sleeve, manufactured by All Power Manufacturing Co., classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-477-5706 has 3 manufacturer part numbers on file: 4M374BC18-020 (All Power Manufacturing Co.), 4M374BC18-020 (The Boeing Company Div Defense), 4M374BC18-020 (Mayday Manufacturing Co.).
Key specifications for 4M374BC18-020: Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: MIL-C-83488 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 1.4900 INCHES MINIMUM AND 1.5100 INCHES MAXIMUM IN; Body Outside Diameter: 1.3141 INCHES MINIMUM AND 1.3151 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.