The Light,signal, cataloged under National Stock Number 5850-01-381-8566, is classified within Federal Supply Class 5850 (Visible and Invisible Light Communication Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. Government technical data includes 3 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 2 items share a part number with this NSN in the catalog (possible match — not a government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 | 5850-01-381-8566 |
| Item Name | Light,signal |
| FSC / FSG | 5850 / 58 — Visible and Invisible Light Communication Equipment |
| Status | ACTIVE |
| Shape | RECTANGULAR |
| Material | STEEL BASE |
| Voltage Rating in Volts | 120.0 AC NOMINAL OR 240.0 AC NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 65-340 | 3/9 Design control — primary reference Fidelipac Corp |
NSN 5850-01-381-8566 is a Light,signal, classified under FSC 5850, Visible and Invisible Light Communication Equipment. Status: active.
2 possible matches (shared part number, not a government interchangeability claim): 3770-01-647-3936, 4130-01-675-4112. Verify interchangeability with system specifications before substitution.
Key specifications for 5850-01-381-8566: Overall Height: 2.500 INCHES NOMINAL IN; Shape: RECTANGULAR; Overall Length: 10.000 INCHES NOMINAL IN; Overall Width: 5.000 INCHES NOMINAL IN. 3 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.