The Focusing Ring,optical Instrument, cataloged under National Stock Number 5855-01-593-9304, is classified within Federal Supply Class 5855 (Night Vision Equipment, Emitted and Reflected Radiation) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 3 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Item Name | Focusing Ring,optical Instrument |
| FSC / FSG | 5855 — Night Vision Equipment, Emitted and Reflected Radiation (FSG 58) |
| Manufacturers | L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions (CAGE 0B107) |
| Parameter | Value |
|---|---|
| NSN | 5855-01-593-9304 |
| Primary Part Number | APG-204-A8 |
| Item Name | Focusing Ring,optical Instrument |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions |
| Status | ACTIVE |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL B — Remove Demilitarization Key Points |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| APG-204-A8 PRIMARY | L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions (USA) |
| Reference | Meaning |
|---|---|
| APG-204 | D/9 Drawing number reference only L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions |
NSN 5855-01-593-9304 is a Focusing Ring,optical Instrument, manufactured by L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-593-9304 has 1 manufacturer part number on file: APG-204-A8 (L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions).
3 possible matches (shared part number, not a government interchangeability claim): 5855-01-593-9314, 5855-01-593-9320, 5855-01-593-9326. 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.
NSN 5855-01-593-9304 has DEMIL Code B. Demilitarization may be required before disposal or transfer to non-military entities.
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.