The Keyboard,data Entry, cataloged under National Stock Number 5840-01-609-9558, is classified within Federal Supply Class 5840 (Radar Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Cortron, Inc. Dba Cortron Inc. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5840-01-609-9558 |
| Primary Part Number | KK20533015 |
| Item Name | Keyboard,data Entry |
| FSC / FSG | 5840 / 58 — Radar Equipment, Except Airborne |
| Manufacturer | Cortron, Inc. Dba Cortron Inc |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| KK20533015 PRIMARY | Cortron, Inc. Dba Cortron Inc (USA) |
| 314R420-4 | Lockheed Martin Services, Llc (USA) |
| Reference | Meaning |
|---|---|
| 533-0022A | 3/1 Design control — primary reference Cortron, Inc. Dba Cortron Inc |
NSN 5840-01-609-9558 is a Keyboard,data Entry, manufactured by Cortron, Inc. Dba Cortron Inc, classified under FSC 5840, Radar Equipment, Except Airborne. Status: active.
NSN 5840-01-609-9558 has 2 manufacturer part numbers on file: KK20533015 (Cortron, Inc. Dba Cortron Inc), 314R420-4 (Lockheed Martin Services, Llc).
1 possible match (shared part number, not a government interchangeability claim): 5840-01-609-9560. Verify interchangeability with system specifications before substitution.
Key specifications for KK20533015: Special Features: EN ROUTE BACKLIT KEYBOARD-CONFIGURED FOR THE RADAR POSITION CONSOLE (R-POS); NEITHER P/N IS FULLY IDENTIFYING OF THE PART; BOTH ARE NEEDED IN COMBINATION TO IDENTIFY THE PART; Part Name Assigned by Controlling Agency: R-POS KEYBOARD; End Item Identification: DISPLAY SYSTEM REPLACEMENT (DSR). 0 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). 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.