The Bushing,sleeve, cataloged under National Stock Number 3120-01-291-9129, 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 12 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-291-9129 |
| Primary Part Number | 4M315-4 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Defense |
| Status | ACTIVE |
| Surface Finish | 63.0 MICROINCHES OVERALL |
| Corner Shape | SQUARE ALL CORNERS |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Flange Outside Diameter | 0.5480 INCHES MINIMUM AND 0.5780 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.3740 INCHES MINIMUM AND 0.3760 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | AMS 5629 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.3125 INCHES MINIMUM AND 0.3130 INCHES MAXIMUM IN |
| Specification/standard Data | 76301-4-315 MANUFACTURERS STANDARD |
| Surface Treatment | PASSIVATE OVERALL |
| Flange Width | 0.0150 INCHES MINIMUM AND 0.0250 INCHES MAXIMUM IN |
| Material | STEEL COMP XM-13 OVERALL |
| 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 |
|---|---|
| 4M315-4 PRIMARY | The Boeing Company Div Defense (USA) |
| Reference | Meaning |
|---|---|
| 4M315-4 | 5/1 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| 4M315-4 | 5/1 Secondary reference Avalon Machine Products Inc |
| 4M315-4 | 5/1 Secondary reference Trico Manufacturing Inc. |
NSN 3120-01-291-9129 is a Bushing,sleeve, manufactured by The Boeing Company Div Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-291-9129 has 1 manufacturer part number on file: 4M315-4 (The Boeing Company Div Defense).
Key specifications for 4M315-4: Surface Finish: 63.0 MICROINCHES OVERALL; Corner Shape: SQUARE ALL CORNERS; Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Flange Outside Diameter: 0.5480 INCHES MINIMUM AND 0.5780 INCHES MAXIMUM IN. 12 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.