The Switch Assembly,transmission, cataloged under National Stock Number 2520-01-128-8766, 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through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 2520-01-128-8766 |
| Primary Part Number | 6838810 |
| Item Name | Switch Assembly,transmission |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Allison Transmission Inc Dba Allison Transmission, Inc |
| Status | ACTIVE |
| General Characteristics Item Description | CONSISTS OF SWITCH,ELECTRICAL LEAD AND PLASTIC SHRINK TUBE,1.062 IN.DIA,23.000 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 |
|---|---|
| 6838810 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 29511978 | Allison Transmission Inc Dba Allison Transmission, Inc (USA) |
| 77182-2 | Kovatch Corp. (USA) |
| Reference | Meaning |
|---|---|
| 23011923 | 3/9 Design control — primary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
| SW26260 | 5/2 Secondary reference U.S. Government activity |
| 23011923 | C/1 Advisory reference — outside the item-of-supply concept General Motors Llc Dba General Motors Llc |
| 2301923 | 5/9 Secondary reference Military Vehicles Opn General Motors Truck and Bus Group Ms 2603-02 |
NSN 2520-01-128-8766 is a Switch Assembly,transmission, manufactured by Allison Transmission Inc Dba Allison Transmission, Inc, classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-128-8766 has 3 manufacturer part numbers on file: 6838810 (Allison Transmission Inc Dba Allison Transmission, Inc), 29511978 (Allison Transmission Inc Dba Allison Transmission, Inc), 77182-2 (Kovatch Corp.).
1 possible match (shared part number, not a government interchangeability claim): 3110-01-507-7731. Verify interchangeability with system specifications before substitution.
Key specifications for 6838810: General Characteristics Item Description: CONSISTS OF SWITCH,ELECTRICAL LEAD AND PLASTIC SHRINK TUBE,1.062 IN.DIA,23.000 IN.LG IN. 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.