The Filter,signal Light, cataloged under National Stock Number 5850-00-620-3633, 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 7 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5850-00-620-3633 |
| Item Name | Filter,signal Light |
| FSC / FSG | 5850 / 58 — Visible and Invisible Light Communication Equipment |
| Status | ACTIVE |
| FSC Application Data | 1. FILTER,SIGNAL LIGHT,LIGHT COMMUNICATION |
| Overall Diameter | 0.375 INCHES NOMINAL IN |
| Polarization Feature | NOT INCLUDED |
| Criticality Code Justification | FEAT |
| Top/bottom Gasket | NOT INCLUDED |
| Color | RED |
| Material | PLASTIC |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | Y |
| Reference | Meaning |
|---|---|
| RC1339L3 | 5/9 Secondary reference U.S. Government activity |
| 60327R1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5850-00-620-3633 is a Filter,signal Light, classified under FSC 5850, Visible and Invisible Light Communication Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 6210-01-321-1215. Verify interchangeability with system specifications before substitution.
Key specifications for 5850-00-620-3633: FSC Application Data: 1. FILTER,SIGNAL LIGHT,LIGHT COMMUNICATION; Overall Diameter: 0.375 INCHES NOMINAL IN; Polarization Feature: NOT INCLUDED; Criticality Code Justification: FEAT. 7 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.