The Bearing Half,sleeve, cataloged under National Stock Number 3120-00-993-0448, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions. Government technical data includes 16 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-00-993-0448 |
| Primary Part Number | 3W54174 |
| Item Name | Bearing Half,sleeve |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions |
| Status | ACTIVE |
| Corner Shape | SQUARE ALL CORNERS |
| Distance From Centerline of Opening to Left End of Bearing | 0.8750 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM FIRST IN |
| Locking Lug Height | 0.2030 INCHES MINIMUM AND 0.2340 INCHES MAXIMUM IN |
| Body Outside Diameter | 2.1100 INCHES MINIMUM AND 2.1400 INCHES MAXIMUM IN |
| Hole Spacing Angle | 60.0 DEGREES NOMINAL |
| Style Designator | HALF SLEEVE, PLAIN, NO OUTSIDE FLANGES |
| Body Inside Diameter | 1.9860 INCHES MINIMUM AND 2.0160 INCHES MAXIMUM IN |
| Lubricant Accommodation Style | GROOVED CIRCULAR |
| Locking Lug Width | 0.1610 INCHES MINIMUM AND 0.1930 INCHES MAXIMUM IN |
| Antirotation/lubrication Type and Quantity | 6 HOLE |
| Distance From Lug End to End of Bearing | 0.8750 INCHES NOMINAL IN |
| Material | STEEL OUTER LAYER |
| Material | COPPER ALLOY INNER LAYER |
| Surface Groove Location and Quantity | 1 INTERNAL |
| Locking Lug Length | 0.0500 INCHES NOMINAL IN |
| Hole Diameter | 0.1880 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 |
|---|---|
| 3W54174 PRIMARY | Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions (USA) |
| Reference | Meaning |
|---|---|
| 3W54174 | 3/9 Design control — primary reference Siemens Energy, Inc. Dba Dresser-Rand |
| 3W54174 | 5/9 Secondary reference U.S. Government activity |
| 3W54174 | 5/9 Secondary reference Curtiss-Wright Electro-Mechanical Corporation Dba Curtiss-Wright Steam and Air Solutions Div Steam and Air Solutions |
| 3W54174 | 5/9 Secondary reference Ingersoll Rand Co |
NSN 3120-00-993-0448 is a Bearing Half,sleeve, manufactured by Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-00-993-0448 has 1 manufacturer part number on file: 3W54174 (Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions).
Key specifications for 3W54174: Corner Shape: SQUARE ALL CORNERS; Distance From Centerline of Opening to Left End of Bearing: 0.8750 INCHES MINIMUM AND 2.2500 INCHES MAXIMUM FIRST IN; Locking Lug Height: 0.2030 INCHES MINIMUM AND 0.2340 INCHES MAXIMUM IN; Body Outside Diameter: 2.1100 INCHES MINIMUM AND 2.1400 INCHES MAXIMUM IN. 16 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.