The Bushing,sleeve, cataloged under National Stock Number 3120-01-034-3008, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 18 specifications, cited from the U.S. Government catalog. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 3120-01-034-3008 |
| Primary Part Number | GB10F4-22 |
| Item Name | Bushing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE |
| Surface Finish | 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 200.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| 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 OVERALL |
| Flange Outside Diameter | 0.4900 INCHES MINIMUM AND 0.5100 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.3737 INCHES MINIMUM AND 0.3747 INCHES MAXIMUM IN |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 42.0 ROCKWELL C MAXIMUM OVERALL |
| Style Designator | SOLID, EXTERNAL FLANGE ONE END |
| Body Inside Diameter | 0.2497 INCHES MINIMUM AND 0.2507 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Flange Width | 0.0420 INCHES MINIMUM AND 0.0470 INCHES MAXIMUM IN |
| Material | STEEL COMP 4130 OR STEEL COMP 4340 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 |
|---|---|
| GB10F4-22 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| GB10F4-22 | Northrop Grumman Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GB10F4-22 | 5/9 Secondary reference Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Northrop Grumman Aeronautics Systems |
NSN 3120-01-034-3008 is a Bushing,sleeve, manufactured by Northrop Grumman Systems Corporation, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-034-3008 has 2 manufacturer part numbers on file: GB10F4-22 (Northrop Grumman Systems Corporation), GB10F4-22 (Northrop Grumman Systems Corporation).
Key specifications for GB10F4-22: Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY; Surface Finish: 200.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Corner Shape: SQUARE INSIDE RIGHT CORNER. 18 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.