The Spider,differential, cataloged under National Stock Number 2520-01-570-7973, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Meritor Heavy Vehicle Systems, Llc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Spider,differential |
| FSC / FSG | 2520 — Vehicular Power Transmission Components (FSG 25) |
| Manufacturers | Oshkosh Defense Llc (CAGE 75Q65); Meritor Heavy Vehicle Systems, Llc (CAGE 78500) |
| Parameter | Value |
|---|---|
| NSN | 2520-01-570-7973 |
| Primary Part Number | 884231038E |
| Item Name | Spider,differential |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Meritor Heavy Vehicle Systems, Llc |
| Status | ACTIVE |
| 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 |
|---|---|
| 17KP706 | Oshkosh Defense Llc (USA) |
| 884231038E PRIMARY | Meritor Heavy Vehicle Systems, Llc (USA) |
| Reference | Meaning |
|---|---|
| 17KP706 | 5/9 Secondary reference Oshkosh Corp |
| 3684262 | D/9 Drawing number reference only Oshkosh Corp |
NSN 2520-01-570-7973 is a Spider,differential, manufactured by Meritor Heavy Vehicle Systems, Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-570-7973 has 2 manufacturer part numbers on file: 17KP706 (Oshkosh Defense Llc), 884231038E (Meritor Heavy Vehicle Systems, Llc).
1 possible match (shared part number, not a government interchangeability claim): 2530-01-570-8631. Verify interchangeability with system specifications before substitution.
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.