The Shaft,axle,automotive, cataloged under National Stock Number 2520-01-040-2160, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is General Motors Llc Dba General Motors Llc. Government technical data includes 22 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-040-2160 |
| Primary Part Number | 3977383 |
| Item Name | Shaft,axle,automotive |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | General Motors Llc Dba General Motors Llc |
| Status | ACTIVE |
| First End Bearing Seat Diameter | 1.460 INCHES NOMINAL IN |
| Mounting Facility Type and Quantity | 8 UNTHREADED HOLE(S) |
| Second End Type | SPLINED |
| End Hole Type | DRILLED |
| First End Type | FLANGED |
| First End Bearing Seat Width | 0.750 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Second End Spline Quantity | 30 |
| Second End Bearing Seat | NOT INCLUDED |
| Flange Thickness at Mounting Hole | 0.470 INCHES NOMINAL IN |
| Hole Depth | 0.400 INCHES NOMINAL IN |
| Second End Spline Pressure Angle in Deg | 37.5 |
| First End Distance From Bearing Seat to End | 1.500 INCHES MINIMUM AND 1.780 INCHES MAXIMUM IN |
| Flange Overall Thickness | 0.850 INCHES NOMINAL IN |
| Drilled Hole Diameter | 0.400 INCHES NOMINAL IN |
| Second End Spline Type | INVOLUTE |
| Material | STEEL |
| Hole Quantity | 1 |
| Flange Outside Diameter | 4.460 INCHES MINIMUM AND 4.470 INCHES MAXIMUM IN |
| First End Bearing Seat | INCLUDED |
| Second End Pitch Diameter | 1.500 INCHES NOMINAL IN |
| Hole Diameter | 0.511 INCHES MINIMUM AND 0.515 INCHES MAXIMUM IN |
| Second End Spline Length | 2.110 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 |
|---|---|
| 3977383 PRIMARY | General Motors Llc Dba General Motors Llc (USA) |
| Reference | Meaning |
|---|---|
| 3977383 | 5/9 Secondary reference General Motors Corp Chevrolet Motor Div Special Products Dept |
| 3977383 | C/1 Advisory reference — outside the item-of-supply concept Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
NSN 2520-01-040-2160 is a Shaft,axle,automotive, manufactured by General Motors Llc Dba General Motors Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-040-2160 has 1 manufacturer part number on file: 3977383 (General Motors Llc Dba General Motors Llc).
Key specifications for 3977383: First End Bearing Seat Diameter: 1.460 INCHES NOMINAL IN; Mounting Facility Type and Quantity: 8 UNTHREADED HOLE(S); Second End Type: SPLINED; End Hole Type: DRILLED. 22 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.