The Ring,retaining,optical Element, cataloged under National Stock Number 5855-01-284-1609, 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 6 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5855-01-284-1609 |
| Item Name | Ring,retaining,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Status | ACTIVE |
| Internal Flange Thickness | 0.250 INCHES NOMINAL IN |
| Outside Diameter | 8.860 INCHES NOMINAL IN |
| Aperture Diameter | 6.400 INCHES NOMINAL IN |
| Surface Treatment | CHROMATE AND PAINT |
| Mounting Configuration | SIX 0.112-40 UNC 22B HOLES ON AN 8.200 IN. DIA. CIRCLE IN |
| Material | ALUMINUM ALLOY 6061 |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL D — Destroy Item |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Reference | Meaning |
|---|---|
| 2953217-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5855-01-284-1609 is a Ring,retaining,optical Element, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
Key specifications for 5855-01-284-1609: Internal Flange Thickness: 0.250 INCHES NOMINAL IN; Outside Diameter: 8.860 INCHES NOMINAL IN; Aperture Diameter: 6.400 INCHES NOMINAL IN; Surface Treatment: CHROMATE AND PAINT. 6 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 5855-01-284-1609 has DEMIL Code D. 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.