PartsTable TECHNICAL DATA SHEET
NSN 5855-01-548-3801Government record, cited

Cap, Lens5855-01-548-3801

NSN 5855-01-548-3801 · NIIN 015483801 · Part number 4212855
Teledyne Flir Defense, Inc. · FSC 5855 — Night Vision Equipment, Emitted and Reflected Radiation · FSG 58 — Communication, Detection, and Coherent Radiation Equipment · CAGE 3UVR3
Government record, cited
NSN 5855-01-548-3801 — this item is cataloged by the U.S. Government under National Stock Number 5855-01-548-3801. Manufacturer of record part number: 4212855.
Also searched as  5855-01-548-3801 · 5855015483801 · NIIN 015483801 · 01-548-3801 · FSC 5855 Night Vision Equipment, Emitted and Reflected Radiation · CAGE 3UVR3 · 4212855 · 56868 · LFEMUMS-012
Nearby stock numbers  ·
Features
  • Cap,lens — FSC 5855
  • 2 manufacturer part numbers on file
  • Manufacturer of record: Teledyne Flir Defense, Inc.
Identification
  • NSN: 5855-01-548-3801
  • NIIN: 015483801
  • FSC: 5855 — Night Vision Equipment, Emitted and Reflected Radiation
  • FSG: 58 — Communication, Detection, and Coherent Radiation Equipment
  • Primary part number: 4212855
  • Manufacturer: Teledyne Flir Defense, Inc.
General Description

The Cap,lens, cataloged under National Stock Number 5855-01-548-3801, 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 Teledyne Flir Defense, Inc.. The record lists 2 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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.

Technical Specifications
ParameterValue
NSN5855-01-548-3801
Primary Part Number4212855
Item NameCap,lens
FSC / FSG5855 / 58 — Night Vision Equipment, Emitted and Reflected Radiation
ManufacturerTeledyne Flir Defense, Inc.
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
DEMIL CodeDEMIL A — No Demilitarization Required
HazardNo hazard code in the DLA record (HMIC N)
Criticality CodeX
Cross-Reference Index
Part NumberManufacturer
4212855 PRIMARY Teledyne Flir Defense, Inc. (USA)
LFEMUMS-012 L.f.e. (FRA)
Reference documents
ReferenceMeaning
56868 5/9 Secondary reference
Optical Systems Technology, Inc Dba Osti Startron
No interchangeability data on file.
Other items in FSC 5855 — Night Vision Equipment, Emitted and Reflected Radiation
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5855-00-003-2243
5855-00-003-2243 · Item name not on file
5855-00-003-3228
SUPPORT,SEARCHLIGH
5855-00-003-6408
LENS FILTER ASSY
5855-00-004-0904
PLATE
5855-00-004-1909
5855-00-004-1909 · Item name not on file
5855-00-006-9703
5855-00-006-9703 · Item name not on file
5855-00-007-5137
5855-00-007-5137 · Item name not on file
5855-00-010-0147
5855-00-010-0147 · Item name not on file

Frequently Asked Questions

What is NSN 5855-01-548-3801?

NSN 5855-01-548-3801 is a Cap,lens, manufactured by Teledyne Flir Defense, Inc., classified under FSC 5855, Night Vision Equipment, Emitted and Reflected Radiation. Status: active.

What part numbers are listed for NSN 5855-01-548-3801?

NSN 5855-01-548-3801 has 2 manufacturer part numbers on file: 4212855 (Teledyne Flir Defense, Inc.), LFEMUMS-012 (L.f.e.).

What are the specifications of 4212855?

Key specifications for 4212855: Part Name Assigned by Controlling Agency: REAR LENS COVER; End Item Identification: 5855-01-547-9489;SIGHT,NIGHT VISION SNIPERSCOPE. 0 specifications are documented in the U.S. Government catalog.

Is NSN 5855-01-548-3801 hazardous material?

No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.

Sources

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.

✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.
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