The Universal Joint,vehicular, cataloged under National Stock Number 2520-01-446-3678, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 6 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-446-3678 |
| Primary Part Number | 512-6404653-47 |
| Item Name | Universal Joint,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Hub Spline Quantity | 10 FIRST END |
| Hub Bore Diameter | 1.0030 INCHES NOMINAL FIRST END IN |
| Design Type | BLOCK AND PIN |
| Internal Hub Spline Major Diameter | 0.9995 INCHES NOMINAL FIRST END IN |
| Connection End Type | HUB,BORED FIRST END |
| Connection End Type | HUB,STRAIGHT SPLINE SECOND END |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 512-6404654-43 | Naval Sea Systems Command (USA) |
| 512-6404653-47 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 6404653 | D/9 Drawing number reference only Naval Sea Systems Command |
| DF6503-175 FN 47 | 5/9 Secondary reference Huntington Ingalls Inc Div Newport News Shipbuilding |
NSN 2520-01-446-3678 is a Universal Joint,vehicular, manufactured by Naval Sea Systems Command, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-446-3678 has 2 manufacturer part numbers on file: 512-6404654-43 (Naval Sea Systems Command), 512-6404653-47 (Naval Sea Systems Command).
Key specifications for 512-6404653-47: Hub Spline Quantity: 10 FIRST END; Hub Bore Diameter: 1.0030 INCHES NOMINAL FIRST END IN; Design Type: BLOCK AND PIN; Internal Hub Spline Major Diameter: 0.9995 INCHES NOMINAL FIRST END IN. 6 specifications are documented in the U.S. Government catalog.
Possible hazard — SDS may be required (DLA HMIC P). 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.