The Clutch Half,positive,vehicular, cataloged under National Stock Number 2520-01-399-7409, is classified within Federal Supply Class 2520 (Vehicular Power Transmission Components) of the Vehicular Equipment Components group. The manufacturer of record is Lake Shore Systems, Inc.. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 2520-01-399-7409 |
| Primary Part Number | 1161842 |
| Item Name | Clutch Half,positive,vehicular |
| FSC / FSG | 2520 / 25 — Vehicular Power Transmission Components |
| Manufacturer | Lake Shore Systems, Inc. |
| Status | ACTIVE |
| Bore Shape | STRAIGHT |
| Bore Diameter | 5.508 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 |
| Part Number | Manufacturer |
|---|---|
| 7D3-04917 PIECE 14 | Lake Shore Systems, Inc. (USA) |
| 1161842 PRIMARY | Lake Shore Systems, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 7D3-04917 | D/9 Drawing number reference only Lake Shore Systems, Inc. |
NSN 2520-01-399-7409 is a Clutch Half,positive,vehicular, manufactured by Lake Shore Systems, Inc., classified under FSC 2520, Vehicular Power Transmission Components. Status: active.
NSN 2520-01-399-7409 has 2 manufacturer part numbers on file: 7D3-04917 PIECE 14 (Lake Shore Systems, Inc.), 1161842 (Lake Shore Systems, Inc.).
2 possible matches (shared part number, not a government interchangeability claim): 3020-01-399-7410, 3020-01-400-6056. Verify interchangeability with system specifications before substitution.
Key specifications for 1161842: Bore Shape: STRAIGHT; Bore Diameter: 5.508 INCHES NOMINAL IN. 2 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.