The Ring,retaining,optical Element, cataloged under National Stock Number 5855-01-623-5575, 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 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5855-01-623-5575 |
| Primary Part Number | LFG-040-A4 |
| Item Name | Ring,retaining,optical Element |
| 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 |
|---|---|
| LFG-040-A4 PRIMARY | L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions (USA) |
| LFG-040-A4-BW | Iea Mil-Optics Gmbh (DEU) |
| LFG-040-A4 | Tecnex Oy (FIN) |
| Reference | Meaning |
|---|---|
| 10412725 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5855-01-623-5575 is a Ring,retaining,optical Element, 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 5855-01-623-5575 has 3 manufacturer part numbers on file: LFG-040-A4 (L3 Technologies, Inc. Dba Insight Technology Div Integrated Vision Solutions), LFG-040-A4-BW (Iea Mil-Optics Gmbh), LFG-040-A4 (Tecnex Oy).
Key specifications for LFG-040-A4: Special Features: DIOPTER CAP ASSY -0.5. ANCILLARY ITEM FOR, OR REPAIR PART FOR: AN/PSQ-36 KIT 5855-01-621-2725.. 0 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.
NSN 5855-01-623-5575 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.