The Bearing,sleeve, cataloged under National Stock Number 3120-00-684-2005, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Marine Diesel, Inc. Dba Marine Diesel. Government technical data includes 28 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-684-2005 |
| Primary Part Number | 684-2005 |
| Item Name | Bearing,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Marine Diesel, Inc. Dba Marine Diesel |
| Status | ACTIVE |
| Surface Finish | 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE |
| Surface Finish | 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF RIGHT FLANGE |
| Surface Finish | 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF LEFT FLANGE |
| Surface Finish | 250.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF BODY |
| Surface Finish | 125.0 MICROINCHES RIGHT END SURFACE OF BODY AND FLANGE |
| Corner Shape | SQUARE INSIDE RIGHT CORNER |
| Corner Shape | SQUARE RIGHT FLANGE BODY 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 RIGHT FLANGE OUTSIDE LEFT CORNER |
| Corner Shape | SQUARE INSIDE LEFT CORNER |
| Right Flange Width | 0.1700 INCHES MINIMUM AND 0.2100 INCHES MAXIMUM IN |
| Body Outside Diameter | 0.6400 INCHES MINIMUM AND 0.6600 INCHES MAXIMUM IN |
| Style Designator | SOLID, EXTERNAL FLANGES BOTH ENDS |
| Body Inside Diameter | 0.5150 INCHES NOMINAL IN |
| Right Flange Outside Diameter | 0.7500 INCHES NOMINAL IN |
| Lubricant Accommodation Style | GROOVED CLOSED BOTH ENDS |
| Left Flange Outside Diameter | 0.7500 INCHES NOMINAL IN |
| Left Flange Width | 0.1700 INCHES MINIMUM AND 0.2100 INCHES MAXIMUM IN |
| Antirotation/lubrication Type and Quantity | 1 HOLE AND 1 SLOT |
| Material | COPPER ALLOY OVERALL |
| Surface Groove Location and Quantity | 1 INTERNAL |
| Slot Width | 0.1310 INCHES NOMINAL FIRST IN |
| Slot Length | 1.2200 INCHES MINIMUM AND 1.2600 INCHES MAXIMUM FIRST IN |
| Hole Diameter | 0.0930 INCHES NOMINAL FIRST IN |
| 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 |
|---|---|
| 684-2005 | Marine Diesel, Inc. Dba Marine Diesel (USA) |
| 373888 | Honeywell International Inc. Div Aerospace - Torrance (USA) |
| Reference | Meaning |
|---|---|
| 373888 | 3/9 Design control — primary reference U.S. Government activity |
| 373888 | 5/9 Secondary reference Alliedsignal Inc Dba Allied-Signal Aerospace Co |
| 373888 | 3/2 Design control — primary reference U.S. Government activity |
NSN 3120-00-684-2005 is a Bearing,sleeve, manufactured by Marine Diesel, Inc. Dba Marine Diesel, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-684-2005 has 2 manufacturer part numbers on file: 684-2005 (Marine Diesel, Inc. Dba Marine Diesel), 373888 (Honeywell International Inc. Div Aerospace - Torrance).
Key specifications for 684-2005: Surface Finish: 125.0 MICROINCHES INSIDE DIAMETER SURFACE OF BODY; Surface Finish: 125.0 MICROINCHES LEFT END SURFACE OF BODY AND FLANGE; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF RIGHT FLANGE; Surface Finish: 125.0 MICROINCHES OUTSIDE DIAMETER SURFACE OF LEFT FLANGE. 28 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.