The Spider,differential, cataloged under National Stock Number 2520-01-108-4160, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Dana Commercial Vehicle Products, Llc. Government technical data includes 7 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2520-01-108-4160 |
| Primary Part Number | 86778 |
| Item Name | Spider,differential |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Dana Commercial Vehicle Products, Llc |
| Status | ACTIVE |
| Hub Outside Diameter | 4.000 INCHES NOMINAL IN |
| Hub Bore Diameter | 2.625 INCHES NOMINAL IN |
| Arm Length | 2.531 INCHES NOMINAL IN |
| Length Across Arms | 9.000 INCHES NOMINAL IN |
| Material | STEEL |
| Arm Diameter | 1.250 INCHES NOMINAL IN |
| Hub Thickness | 1.188 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 |
|---|---|
| 144EX547 | Oshkosh Defense Llc (USA) |
| 86778 PRIMARY | Dana Commercial Vehicle Products, Llc (USA) |
| Reference | Meaning |
|---|---|
| 144EX547 | 5/9 Secondary reference Oshkosh Corp |
| 034890T | C/1 Advisory reference — outside the item-of-supply concept Kovatch Corp. |
NSN 2520-01-108-4160 is a Spider,differential, manufactured by Dana Commercial Vehicle Products, Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-108-4160 has 2 manufacturer part numbers on file: 144EX547 (Oshkosh Defense Llc), 86778 (Dana Commercial Vehicle Products, Llc).
Key specifications for 86778: Hub Outside Diameter: 4.000 INCHES NOMINAL IN; Hub Bore Diameter: 2.625 INCHES NOMINAL IN; Arm Length: 2.531 INCHES NOMINAL IN; Special Features: ARM LUBRICANT METHOD PASSAGE:FLATS;LUBRICATION MODE:IN LUBRICANT. 7 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.