The Bushing,sleeve, cataloged under National Stock Number 3120-00-345-2147, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Dla Aviation Engineering Div Department of Defense. Government technical data includes 7 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-345-2147 |
| Primary Part Number | 003452147-04161 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Dla Aviation Engineering Div Department of Defense |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Body Outside Diameter | 0.4985 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN |
| 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 | X |
| Part Number | Manufacturer |
|---|---|
| 3120A052-03323 | Dla Aviation Engineering Div Department of Defense (USA) |
| ST4M166-6-004 | The Boeing Company Div Defense (USA) |
| 003452147-04161 PRIMARY | Dla Aviation Engineering Div Department of Defense (USA) |
| Reference | Meaning |
|---|---|
| ST4M166-6-004 | 5/9 Secondary reference Avalon Machine Products Inc |
| ST4M166-6-004 | 5/9 Secondary reference U.S. Government activity |
| ST4M166-6-004 | 5/9 Secondary reference All Power Manufacturing Co. |
| ST4M166-6-004 | 5/9 Secondary reference Reid Products Inc. Dba Reid Products Inc |
| ST4M166-6-004 | 5/9 Secondary reference Mayday Manufacturing Co. |
| 4M106 | 5/9 Secondary reference The Boeing Company Div Defense |
| 10107633 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 3120-00-345-2147 is a Bushing,sleeve, manufactured by Dla Aviation Engineering Div Department of Defense, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-345-2147 has 3 manufacturer part numbers on file: 3120A052-03323 (Dla Aviation Engineering Div Department of Defense), ST4M166-6-004 (The Boeing Company Div Defense), 003452147-04161 (Dla Aviation Engineering Div Department of Defense).
2 possible matches (shared part number, not a government interchangeability claim): 3120-00-536-6076, 3120-01-135-4206. Verify interchangeability with system specifications before substitution.
Key specifications for 003452147-04161: Corner Shape: SQUARE ALL CORNERS; Body Outside Diameter: 0.4985 INCHES MINIMUM AND 0.4990 INCHES MAXIMUM IN; Style Designator: SOLID, PLAIN, NO OUTSIDE FLANGES; Material Document and Classification: AMS 5643 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 7 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.