The Ring,retaining,optical Element, cataloged under National Stock Number 5855-01-325-3380, is classified within Federal Supply Class 5855 (Night Vision Equipment, Emitted and Reflected Radiation) of the Communication, Detection, and Coherent Radiation Equipment group. Government technical data includes 5 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5855-01-325-3380 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Status | ACTIVE |
| FSC Application Data | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION |
| Internal Flange Thickness | 0.195 INCHES NOMINAL IN |
| Outside Diameter | 0.950 INCHES NOMINAL IN |
| Aperture Diameter | 0.756 INCHES MINIMUM AND 0.776 INCHES MAXIMUM IN |
| Material | STEEL COMP 630 |
| 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 |
|---|---|
| SM-C-969249 | 3/2 Design control — primary reference U.S. Government activity |
| SM-C-969249 | 5/2 Secondary reference U.S. Government activity |
NSN 5855-01-325-3380 is a Ring,retaining,optical Element, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
Key specifications for 5855-01-325-3380: FSC Application Data: NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION; Internal Flange Thickness: 0.195 INCHES NOMINAL IN; Overall Length: 0.590 INCHES NOMINAL IN; Outside Diameter: 0.950 INCHES NOMINAL IN. 5 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.