The Shaft,axle,automotive, cataloged under National Stock Number 2520-00-355-2408, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. Government technical data includes 27 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-355-2408 |
| Item Name | Shaft,axle,automotive |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Status | ACTIVE |
| First End Bearing Seat Diameter | 0.363 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN |
| Second End Type | PLAIN |
| First End Thread Direction | RIGHT-HAND |
| First End Type | TAPERED |
| First End Pin Hole Diameter | 0.406 INCHES NOMINAL IN |
| Second End Bearing Seat Width | 2.557 INCHES MINIMUM AND 2.567 INCHES MAXIMUM IN |
| First End Thread Size | 1.750-5 |
| First End Bearing Seat Width | 3.125 INCHES NOMINAL IN |
| Second End Distance From Bearing Seat to End | 6.752 INCHES MINIMUM AND 6.758 INCHES MAXIMUM IN |
| Second End Bearing Seat | INCLUDED |
| Second End Facility Width | 2.997 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Second End Keyway Width | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Second End Facility Location | 3.750 IN. FROM SHAFT END IN |
| Second End Engaging/locking/positioning Facility | SHOULDER |
| First End Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Material Document and Classification | AISI 4140 ASSN STD SINGLE MATERIAL RESPONSE |
| First End Keyway Depth | 0.421 INCHES MINIMUM AND 0.426 INCHES MAXIMUM IN |
| Second End Bearing Seat Diameter | 4.250 INCHES NOMINAL IN |
| Second End Keyway Depth | 0.562 INCHES NOMINAL IN |
| First End Distance From Bearing Seat to End | 9.375 INCHES NOMINAL IN |
| First End Taper | 1.500 INCHES NOMINAL PER FOOT IN |
| First End Taper Major Diameter | 0.363 INCHES MINIMUM AND 0.364 INCHES MAXIMUM IN |
| Second End Facility Diameter | 3.753 INCHES MINIMUM AND 3.754 INCHES MAXIMUM IN |
| Material | STEEL COMP 4140 |
| First End Bearing Seat | INCLUDED |
| Metallic Hardness Rating | 270.0 MINIMUM BRINELL STANDARD AND 320.0 MAXIMUM BRINELL STANDARD |
| First End Keyway Width | 0.749 INCHES MINIMUM AND 0.750 INCHES MAXIMUM 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 |
|---|---|
| 303657 | 3/9 Design control — primary reference U.S. Government activity |
NSN 2520-00-355-2408 is a Shaft,axle,automotive, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
Key specifications for 2520-00-355-2408: First End Bearing Seat Diameter: 0.363 INCHES MINIMUM AND 0.365 INCHES MAXIMUM IN; Second End Type: PLAIN; First End Thread Direction: RIGHT-HAND; First End Type: TAPERED. 27 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.