The Retainer,optical Element, cataloged under National Stock Number 5855-01-272-1504, 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 10 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5855-01-272-1504 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Status | ACTIVE |
| Flange Diameter | 1.200 INCHES NOMINAL IN |
| FSC Application Data | NIGHT VISION EQUIP.,EMITTED AND REFLECTED RADIATION |
| Tapered Hole Minor Diameter | 1.000 INCHES NOMINAL IN |
| Style Designator | SHOULDERED |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | QQ-A-250/11, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Shoulder Taper Angle in Deg | 60.0 |
| Surface Treatment | ANODIZE |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 6061 |
| 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-850326 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5855-01-272-1504 is a Retainer,optical Element, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
Key specifications for 5855-01-272-1504: Flange Diameter: 1.200 INCHES NOMINAL IN; FSC Application Data: NIGHT VISION EQUIP.,EMITTED AND REFLECTED RADIATION; Tapered Hole Minor Diameter: 1.000 INCHES NOMINAL IN; Style Designator: SHOULDERED. 10 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.