The Retainer,optical Element, cataloged under National Stock Number 5855-01-061-6889, 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 15 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5855-01-061-6889 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Status | ACTIVE |
| Radius From Geometric Axis to Hole Center | 1.749 INCHES NOMINAL IN |
| FSC Application Data | NIGHT VISION EQUIP. |
| Hole or Slot Quantity | 2 |
| Drive Type | SLOTTED |
| Drive Facility Angular Spacing in Deg | 180.0 |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Recess Diameter | 3.433 INCHES NOMINAL IN |
| Guide Location | DRIVE EDGE |
| Thread Size | 3.562-32 |
| Guide Design | THREAD CHAMFER |
| Depth | 0.060 INCHES NOMINAL IN |
| Width | 0.072 INCHES NOMINAL IN |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY |
| 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-806423 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5855-01-061-6889 is a Retainer,optical Element, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
Key specifications for 5855-01-061-6889: Radius From Geometric Axis to Hole Center: 1.749 INCHES NOMINAL IN; FSC Application Data: NIGHT VISION EQUIP.; Hole or Slot Quantity: 2; Drive Type: SLOTTED. 15 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.