The Shaft,axle,automotive, cataloged under National Stock Number 2520-00-752-1716, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is U S Army Tank Automotive Command Amsta-Im-Mm. Government technical data includes 17 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through both NSN and commercial part number lookups. 7 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-00-752-1716 |
| Primary Part Number | 7521716 |
| Item Name | Shaft,axle,automotive |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | U S Army Tank Automotive Command Amsta-Im-Mm |
| Status | ACTIVE |
| Second End Type | SPLINED |
| First End Type | SPLINED |
| First End Spline Major Diameter | 1.616 INCHES MINIMUM AND 1.621 INCHES MAXIMUM IN |
| Second End Spline Quantity | 10 |
| Second End Spline Minor Diameter | 1.339 INCHES MINIMUM AND 1.349 INCHES MAXIMUM IN |
| Second End Bearing Seat | NOT INCLUDED |
| Second End Spline Major Diameter | 1.616 INCHES MINIMUM AND 1.621 INCHES MAXIMUM IN |
| First End Spline Quantity | 10 |
| Material Document and Classification | SAE 4145H ASSN STD SINGLE MATERIAL RESPONSE |
| First End Spline Length | 3.190 INCHES NOMINAL IN |
| First End Spline Type | STRAIGHT |
| Second End Spline Type | STRAIGHT |
| First End Spline Minor Diameter | 1.339 INCHES MINIMUM AND 1.349 INCHES MAXIMUM IN |
| Material | STEEL COMP 4145H |
| First End Bearing Seat | NOT INCLUDED |
| Metallic Hardness Rating | 375.0 MINIMUM BRINELL STANDARD AND 429.0 MAXIMUM BRINELL STANDARD |
| Second End Spline Length | 4.840 INCHES NOMINAL IN |
| 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 |
|---|---|
| 7521716 PRIMARY | U S Army Tank Automotive Command Amsta-Im-Mm (USA) |
| Reference | Meaning |
|---|---|
| 913741 | 5/9 Secondary reference Sasco Inc Canadian Div |
| 2670D5 | 5/9 Secondary reference Spalla Inc |
| 2670D5 | 5/9 Secondary reference Diamond Reo Truck Co |
| 2520007521716 | 5/9 Secondary reference E.c.a Etablissement Centrald'approvisionnement Des Forces Armee |
| B496 | 5/9 Secondary reference U.S. Government activity |
| 801E576 | 5/9 Secondary reference Kersey / American Lafrance a Div of Figgie International Inc |
| 3880B496 | 5/9 Secondary reference Meritor Heavy Vehicle Systems, Llc |
NSN 2520-00-752-1716 is a Shaft,axle,automotive, manufactured by U S Army Tank Automotive Command Amsta-Im-Mm, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-752-1716 has 1 manufacturer part number on file: 7521716 (U S Army Tank Automotive Command Amsta-Im-Mm).
3 possible matches (shared part number, not a government interchangeability claim): 5950-01-419-7823, 6130-01-473-0882, 5340-01-612-7886. Verify interchangeability with system specifications before substitution.
Key specifications for 7521716: Second End Type: SPLINED; First End Type: SPLINED; First End Spline Major Diameter: 1.616 INCHES MINIMUM AND 1.621 INCHES MAXIMUM IN; Second End Spline Quantity: 10. 17 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.