The Lockring, cataloged under National Stock Number 2520-00-083-7535, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Allison Transmission Inc Dba Allison Transmission, Inc. Government technical data includes 1 specification, cited from the U.S. Government catalog. The record lists 3 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 2520-00-083-7535 |
| Primary Part Number | 6834401 |
| Item Name | Lockring |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | FORMED FROM 22 GAGE/0.0313 IN.THK/STEEL PLATE,SAE 1008 THRU SAE 1022,5.804 IN.OD,0.219 IN.LG 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 |
|---|---|
| 619521C1 | Komatsu America Corp. (USA) |
| 6834401 PRIMARY | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| D47454 | Cnh Industrial America Llc Dba Cnh America (USA) |
| Reference | Meaning |
|---|---|
| 6833190 | 5/9 Secondary reference General Motors Corp |
| 619521C1 | 5/9 Secondary reference Komatsu American Intl Co |
| 6834401 | 5/9 Secondary reference Detroit Diesel (overseas Distribution Corp) |
NSN 2520-00-083-7535 is a Lockring, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-00-083-7535 has 3 manufacturer part numbers on file: 619521C1 (Komatsu America Corp.), 6834401 (Allison Transmission Inc Dba Allison Transmission, Inc), D47454 (Cnh Industrial America Llc Dba Cnh America).
Key specifications for 6834401: General Characteristics Item Description: FORMED FROM 22 GAGE/0.0313 IN.THK/STEEL PLATE,SAE 1008 THRU SAE 1022,5.804 IN.OD,0.219 IN.LG IN; End Item Identification: 2520-00-083-7535. 1 specification is 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.