The Universal Joint,vehicular, cataloged under National Stock Number 2520-01-173-4718, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-173-4718 |
| Item Name | Universal Joint,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Status | ACTIVE |
| Design Type | SPIDER AND BEARINGS |
| Shaft Spline Quantity | 10 LOCATION NOT OTHERWISE SPECIFIED |
| External Shaft Spline Major Diameter | 0.875 INCHES NOMINAL LOCATION NOT OTHERWISE SPECIFIED IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | Possible hazard — SDS may be required (DLA HMIC P) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 77643-42X10 PIECE 8 | 3/2 Design control — primary reference U.S. Government activity |
| 77643-42X10 | D/9 Drawing number reference only U.S. Government activity |
| SSN637-501-2159965 PIECE 8 | 5/2 Secondary reference U.S. Government activity |
| SSN637-501-2159965 | D/9 Drawing number reference only U.S. Government activity |
NSN 2520-01-173-4718 is a Universal Joint,vehicular, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 3040-01-184-4511. Verify interchangeability with system specifications before substitution.
Key specifications for 2520-01-173-4718: Design Type: SPIDER AND BEARINGS; Shaft Spline Quantity: 10 LOCATION NOT OTHERWISE SPECIFIED; Overall Length: 5.000 INCHES NOMINAL IN; Special Features: 2ND END BORE,0.875 IN. IN. 3 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.