The Bushing,sleeve, cataloged under National Stock Number 3120-00-697-0253, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is The Boeing Company Div Legacy Am&m. Government technical data includes 29 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-697-0253 |
| Primary Part Number | 4B20S7-006 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | The Boeing Company Div Legacy Am&m |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE |
| Surface Finish | 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE |
| Surface Finish | 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES RIGHT END SURFACE OF BODY |
| Surface Finish | 250.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF FLANGE |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE LEFT FLANGE BODY CORNER |
| Corner Shape | SQUARE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE LEFT FLANGE OUTSIDE RIGHT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OUTSIDE DIAMETER SURFACE OF FLANGE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE RIGHT END SURFACE OF BODY |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE LEFT END SURFACE OF BODY AND FLANGE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE RIGHT END SURFACE OF LEFT FLANGE |
| Flange Outside Diameter | 0.6780 INCHES MINIMUM AND 0.6980 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.5635 INCHES MINIMUM AND 0.5645 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Material Document and Classification | MIL-T-6736 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Body Inside Diameter | 0.4370 INCHES MINIMUM AND 0.4380 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OUTSIDE DIAMETER SURFACE OF FLANGE |
| Surface Treatment | CADMIUM LEFT END SURFACE OF BODY AND FLANGE |
| Surface Treatment | CADMIUM RIGHT END SURFACE OF BODY |
| Surface Treatment | CADMIUM OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Treatment | CADMIUM RIGHT END SURFACE OF LEFT FLANGE |
| Flange Width | 0.0570 INCHES MINIMUM AND 0.0620 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 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 |
|---|---|
| 4B20S7-006 PRIMARY | The Boeing Company Div Legacy Am&m (USA) |
NSN 3120-00-697-0253 is a Bushing,sleeve, manufactured by The Boeing Company Div Legacy Am&m, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-697-0253 has 1 manufacturer part number on file: 4B20S7-006 (The Boeing Company Div Legacy Am&m).
Key specifications for 4B20S7-006: Surface Finish: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES RIGHT END SURFACE OF LEFT FLANGE; Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY. 29 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.