The Indicator Subassemb, cataloged under National Stock Number 5850-01-439-6540, is classified within Federal Supply Class 5850 (Visible and Invisible Light Communication Equipment) of the Communication, Detection, and Coherent Radiation Equipment group. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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.
| Item Name | Indicator Subassemb |
| FSC / FSG | 5850 — Visible and Invisible Light Communication Equipment (FSG 58) |
| Parameter | Value |
|---|---|
| NSN | 5850-01-439-6540 |
| Item Name | Indicator Subassemb |
| FSC / FSG | 5850 / 58 — Visible and Invisible Light Communication Equipment |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Reference | Meaning |
|---|---|
| LE409-4076 | 7/1 Vendor item drawing reference The Boeing Company Div Legacy Am&m |
| 434-093-001 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5850-01-439-6540 is a Indicator Subassemb, classified under FSC 5850, Visible and Invisible Light Communication Equipment. Status: active.
1 possible match (shared part number, not a government interchangeability claim): 5895-01-669-4771. Verify interchangeability with system specifications before substitution.
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.