NSN 6650-01-409-0820 · NIIN 014090820 · Part number 1977518
L3 Technologies, Inc. Div L3 Keo · FSC 6650 — Optical Instruments, Test Equipment, Components and Accessories · FSG 66 — Instruments and Laboratory Equipment · CAGE 34228
Government record, cited
NSN 6650-01-409-0820 — this item is cataloged by the U.S. Government under National Stock Number 6650-01-409-0820. Manufacturer of record part number: 1977518.
Also searched as6650-01-409-0820 ·
6650014090820 ·
NIIN 014090820 ·
01-409-0820 ·
FSC 6650 Optical Instruments, Test Equipment, Components and Accessories · CAGE 34228 · 1977518
Manufacturer of record: L3 Technologies, Inc. Div L3 Keo
Identification
NSN: 6650-01-409-0820
NIIN: 014090820
FSC: 6650 — Optical Instruments, Test Equipment, Components and Accessories
FSG: 66 — Instruments and Laboratory Equipment
Primary part number: 1977518
Manufacturer: L3 Technologies, Inc. Div L3 Keo
General Description
The Periscope Subassembly, cataloged under National Stock Number 6650-01-409-0820, is classified within Federal Supply Class 6650 (Optical Instruments, Test Equipment, Components and Accessories) of the Instruments and Laboratory Equipment group. The manufacturer of record is L3 Technologies, Inc. Div L3 Keo. The record lists 1 manufacturer part number 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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
Parameter
Value
NSN
6650-01-409-0820
Primary Part Number
1977518
Item Name
Periscope Subassembly
FSC / FSG
6650 / 66 — Optical Instruments, Test Equipment, Components and Accessories
Other items in FSC 6650 — Optical Instruments, Test Equipment, Components and Accessories
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
6650-00-000-0164
6650-00-000-0164 · Item name not on file
6650-00-001-2319
ARM,SHUTTER,SPECTROMETER
6650-00-001-2322
PLATE,MOUNTING,SPECTROMETER LAMP
6650-00-001-2323
LENS,OPTICAL INSTRUMENT
6650-00-001-2324
PLATE,SPECTROMETER DOOR
6650-00-001-2326
NOZZLE,AIR,SPECTROMETER
6650-00-001-2327
PLATE,LEFT,SPECTROMETER
6650-00-001-2328
6650-00-001-2328 · Item name not on file
Frequently Asked Questions
What is NSN 6650-01-409-0820?
NSN 6650-01-409-0820 is a Periscope Subassembly, manufactured by L3 Technologies, Inc. Div L3 Keo, classified under FSC 6650, Optical Instruments, Test Equipment, Components and Accessories. Status: active.
What part numbers are listed for NSN 6650-01-409-0820?
NSN 6650-01-409-0820 has 1 manufacturer part number on file: 1977518 (L3 Technologies, Inc. Div L3 Keo).
What are the specifications of 1977518?
Key specifications for 1977518: Special Features: PREREGULATOR; End Item Identification: TYPE 18B ADF UNIT 1. 0 specifications are documented in the U.S. Government catalog.
Is NSN 6650-01-409-0820 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.
What is the DEMIL code for NSN 6650-01-409-0820?
NSN 6650-01-409-0820 has DEMIL Code D. Demilitarization may be required before disposal or transfer to non-military entities.
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.