The Clock Distribution System, cataloged under National Stock Number 5820-01-421-8513, is classified within Federal Supply Class 5820 (Radio and Television Communication Equipment, Except Airborne) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Computer Sciences Raytheon. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5820-01-421-8513 |
| Primary Part Number | 580256 |
| Item Name | Clock Distribution System |
| FSC / FSG | 5820 / 58 — Radio and Television Communication Equipment, Except Airborne |
| Manufacturer | Computer Sciences Raytheon |
| 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 |
|---|---|
| 580256 PRIMARY | Computer Sciences Raytheon (USA) |
NSN 5820-01-421-8513 is a Clock Distribution System, manufactured by Computer Sciences Raytheon, classified under FSC 5820, Radio and Television Communication Equipment, Except Airborne. Status: active.
NSN 5820-01-421-8513 has 1 manufacturer part number on file: 580256 (Computer Sciences Raytheon).
Key specifications for 580256: Special Features: REMOTE TIMING: TIMING SYSTEMS LOCATED WITHIN RANGE INSTRUMENTATION AND RANGE USER SITES SYNCHRONIZED WITH CENTRAL TIMING AND SOMETIMES REFERED TO AS 'CLOCK DISTRIBUTION SYSTEMS' (CDS), THIS SYSTEM IS USED TO STRIP PUT DISCRETE CLOCK CODES TO USER EQUIPMENT SUCH AS CRYPTO, MODEMS, MICROWAVE, DATA RECORDERS AND OTHER SUCH EQUIPMENT USED TO PROCESS DATA THAT IS TIME CODE SENSITIVE; End Item Identification: EASTERN RANGE, COMMUNICATIONS/TIMING. 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.