The Polarizing Key,electrical Connec, cataloged under National Stock Number 5935-01-057-8399, is classified within Federal Supply Class 5935 (Connectors, Electrical) of the Electrical and Electronic Equipment Components group. The manufacturer of record is L3 Technologies, Inc. Div Communication Systems-East. Government technical data includes 1 specification, 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5935-01-057-8399 |
| Primary Part Number | 8509774-1 |
| Item Name | Polarizing Key,electrical Connec |
| FSC / FSG | 5935 / 59 — Connectors, Electrical |
| Manufacturer | L3 Technologies, Inc. Div Communication Systems-East |
| Status | ACTIVE |
| Material | COPPER ALLOY |
| 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 |
|---|---|
| SIA-1809 | Sigmation Inc (USA) |
| 8509774-1 PRIMARY | L3 Technologies, Inc. Div Communication Systems-East (USA) |
| Reference | Meaning |
|---|---|
| 8509774-1 | 5/9 Secondary reference Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin |
| 422-14-11-264 | 5/9 Secondary reference Cinch Connectivity Solutions Inc. |
NSN 5935-01-057-8399 is a Polarizing Key,electrical Connec, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5935, Connectors, Electrical. Status: active.
NSN 5935-01-057-8399 has 2 manufacturer part numbers on file: SIA-1809 (Sigmation Inc), 8509774-1 (L3 Technologies, Inc. Div Communication Systems-East).
Key specifications for 8509774-1: Special Features: FINISH-ELECTROLYTIC TIN OVER COPPER FLASH;0.250 IN. W;0.070 IN. H IN; Material: COPPER ALLOY. 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.