The Spider,differential, cataloged under National Stock Number 2520-00-618-9787, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. Government technical data includes 7 specifications, cited from the U.S. Government catalog. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2520-00-618-9787 |
| Item Name | Spider,differential |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Status | ACTIVE |
| Hub Outside Diameter | 2.625 INCHES NOMINAL IN |
| Hub Bore Diameter | 1.312 INCHES NOMINAL IN |
| Arm Length | 1.938 INCHES NOMINAL IN |
| Length Across Arms | 6.500 INCHES NOMINAL IN |
| Material | STEEL |
| Arm Diameter | 0.875 INCHES NOMINAL IN |
| Hub Thickness | 0.812 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 |
| Reference | Meaning |
|---|---|
| 62-0114 | 5/9 Secondary reference U.S. Government activity |
| 8TH4211 | 3/9 Design control — primary reference Ford Motor Co Ford Parts and Service Div Government Part Sales |
| 00062-0114 | 5/9 Secondary reference U.S. Government activity |
| 8TH4211 | 5/9 Secondary reference Ford Motor Company |
NSN 2520-00-618-9787 is a Spider,differential, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6509-01-707-5214. Verify interchangeability with system specifications before substitution.
Key specifications for 2520-00-618-9787: Hub Outside Diameter: 2.625 INCHES NOMINAL IN; Hub Bore Diameter: 1.312 INCHES NOMINAL IN; Arm Length: 1.938 INCHES NOMINAL IN; Special Features: ARM LUBRICANT METHOD PASSAGE:FLAT;LUBRICATION MODE:IN LUBRICANT;FSC APPLICATION DATA:VACUUM,SELFPROPELLED,USAF TYPE NO.MC-1. 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.