The Retainer,optical Element, cataloged under National Stock Number 5855-01-165-2158, is classified within Federal Supply Class 5855 (Night Vision Equipment, Emitted and Reflected Radiation) of the Communication, Detection, and Coherent Radiation Equipment group. The manufacturer of record is Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc. Government technical data includes 14 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5855-01-165-2158 |
| Primary Part Number | SM-C-850160 |
| Item Name | Retainer,optical Element |
| FSC / FSG | 5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation |
| Manufacturer | Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc |
| Status | ACTIVE |
| FSC Application Data | NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION |
| Hole or Slot Quantity | 4 |
| Special Test Features | INTERPRET DRAWING IAW STANDARDS PRESCRIBED BY MIL-D-1000 |
| Hole Chamfer Diameter | 1.300 INCHES NOMINAL IN |
| Style Designator | RECESSED |
| Setscrew Notch | NOT PROVIDED |
| Diameter | 1.580 INCHES NOMINAL IN |
| Recess Depth | 0.070 INCHES NOMINAL IN |
| Recess Diameter | 1.300 INCHES NOMINAL IN |
| Hole Chamfer Angle in Deg | 45.0 |
| Guide Design | THREAD CHAMFER |
| Internal Annular Serration | NOT PROVIDED |
| Material | ALUMINUM ALLOY 6061 |
| Hole Diameter | 1.300 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 |
| Part Number | Manufacturer |
|---|---|
| SM-C-850160 | Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc (USA) |
| SM-C-850160 | Dunlin Manufacturing / Skypen Industries Inc Dba Dunlin Mfg Co (USA) |
| SM-C-850160 | Carson Industries, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SM-C-850160 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5855-01-165-2158 is a Retainer,optical Element, manufactured by Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc, classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.
NSN 5855-01-165-2158 has 3 manufacturer part numbers on file: SM-C-850160 (Freehold Manufacturing Assembly Company, Inc. Dba Freehold Manufacturing Assembly Co Inc), SM-C-850160 (Dunlin Manufacturing / Skypen Industries Inc Dba Dunlin Mfg Co), SM-C-850160 (Carson Industries, Inc.).
Key specifications for SM-C-850160: FSC Application Data: NIGHT VISION EQUIPMENT,EMITTED AND REFLECTED RADIATION; Hole or Slot Quantity: 4; Special Test Features: INTERPRET DRAWING IAW STANDARDS PRESCRIBED BY MIL-D-1000; Hole Chamfer Diameter: 1.300 INCHES NOMINAL IN. 14 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.