The Piston,rear Cover, cataloged under National Stock Number 2520-01-082-9177, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is The W.w. Williams Company, Llc. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-082-9177 |
| Primary Part Number | 6835439 |
| Item Name | Piston,rear Cover |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | The W.w. Williams Company, 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 |
|---|---|
| 2AX333 | Oshkosh Defense Llc (USA) |
| 6835439 PRIMARY | The W.w. Williams Company, Llc (USA) |
| Reference | Meaning |
|---|---|
| 2AX333 | 5/9 Secondary reference Oshkosh Corp |
| 6835439 | 5/9 Secondary reference Allison Transmission Inc Dba Allison Transmission, Inc |
| 6835439 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
NSN 2520-01-082-9177 is a Piston,rear Cover, manufactured by The W.w. Williams Company, Llc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-082-9177 has 2 manufacturer part numbers on file: 2AX333 (Oshkosh Defense Llc), 6835439 (The W.w. Williams Company, Llc).
Key specifications for 6835439: End Item Identification: 2320-01-304-2277 AND 2320-01-304-2278 PLS (PALLETIZED LOADING SYSTEM). 0 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.