The Bearing,washer,thrust, cataloged under National Stock Number 3120-01-520-9641, is classified within Federal Supply Class 3120 (Bearings, Plain, Unmounted) of the Bearings group. The manufacturer of record is Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 3120-01-520-9641 |
| Primary Part Number | 4D99521H02 |
| Item Name | Bearing,washer,thrust |
| FSC / FSG | 3120 / 31 — Bearings, Plain, Unmounted |
| Manufacturer | Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd |
| Status | ACTIVE |
| Corner Shape | ROUND ALL CORNERS |
| Overall Thickness | 2.5500 INCHES NOMINAL IN |
| Style Designator | ROUND |
| Diameter | 4.0100 INCHES NOMINAL IN |
| Cross-Sectional Shape Style | RECTANGULAR |
| Outside Diameter | 4.7500 INCHES NOMINAL IN |
| Material | ALUMINUM ALLOY AND COPPER ALLOY AND NICKEL ALLOY OVERALL |
| Center Hole Shape Style | ROUND |
| 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 |
|---|---|
| 4D99521H02 PRIMARY | Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd (USA) |
| 4D99141 ITEM 21 | Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd (USA) |
NSN 3120-01-520-9641 is a Bearing,washer,thrust, manufactured by Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd, classified under FSC 3120, Bearings, Plain, Unmounted. Status: active.
NSN 3120-01-520-9641 has 2 manufacturer part numbers on file: 4D99521H02 (Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd), 4D99141 ITEM 21 (Curtiss-Wright Electro-Mechanical Corporation Div Curtiss-Wright Emd).
Key specifications for 4D99521H02: Corner Shape: ROUND ALL CORNERS; Overall Thickness: 2.5500 INCHES NOMINAL IN; Style Designator: ROUND; Diameter: 4.0100 INCHES NOMINAL IN. 8 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.