The Connector,receptacle,electrical, cataloged under National Stock Number 5935-01-604-8133, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is Lockheed Martin Corporation Div Rotary and Mission Systems. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-604-8133 |
| Primary Part Number | 257A559-2 |
| Item Name | Connector,receptacle,electrical |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | Lockheed Martin Corporation Div Rotary and Mission Systems |
| 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 |
|---|---|
| 257A559-2 | Lockheed Martin Corporation Div Rotary and Mission Systems (USA) |
| 88-579779-351 | Amphenol Corp Div Amphenol Aerospace Operations (USA) |
| Reference | Meaning |
|---|---|
| 257A559-2 | 3/2 Design control — primary reference U.S. Government activity |
| 257A559-2 | 5/9 Secondary reference Amphenol Optimize Manufacturing Co. Div Amphenol Aerospace/matrix |
NSN 5935-01-604-8133 is a Connector,receptacle,electrical, manufactured by Lockheed Martin Corporation Div Rotary and Mission Systems, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-604-8133 has 2 manufacturer part numbers on file: 257A559-2 (Lockheed Martin Corporation Div Rotary and Mission Systems), 88-579779-351 (Amphenol Corp Div Amphenol Aerospace Operations).
Key specifications for 257A559-2: End Item Identification: A10. 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.