The Retainer,optical Element, cataloged under National Stock Number 5855-01-165-2176, 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 13 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5855-01-165-2176 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Status | ACTIVE |
| FSC Application Data | NIGHT VISION EQUIP.,EMITTED AND REFLECTED RADIATION |
| Hole or Slot Quantity | 3 |
| Special Test Features | INTEREST DRAWING IAW STANDARDS PRESCRIBED BY MIL-D-1000 CATEGORY E,FORM 1 |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Material Document and Classification | QQ-A-200/8, 6061, T6 FED SPEC SINGLE MATERIAL RESPONSE |
| Diameter | 5.312 INCHES NOMINAL IN |
| Recess Depth | 0.100 INCHES NOMINAL IN |
| Guide Design | THREAD CHAMFER |
| Surface Treatment | PAINT |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 6061 |
| Hole Diameter | 5.000 INCHES NOMINAL IN |
| 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-D-850134 | 3/2 Design control — primary reference U.S. Government activity |
| SM-D-850134 | 5/9 Secondary reference L3 Technologies, Inc. Dba Insight Technology Division Div Insight Technology Division |
NSN 5855-01-165-2176 is a Retainer,optical Element, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
Key specifications for 5855-01-165-2176: FSC Application Data: NIGHT VISION EQUIP.,EMITTED AND REFLECTED RADIATION; Hole or Slot Quantity: 3; Special Test Features: INTEREST DRAWING IAW STANDARDS PRESCRIBED BY MIL-D-1000 CATEGORY E,FORM 1; Style Designator: RECESSED. 13 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.