PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21813-2Amplifier-Monitor

L3 Technologies, Inc. Div Communication Systems-East · NSN 5840-00-023-1933 · FSC 5840 · No Item Name Available
Verified by PartsTable
NSN 5840-00-023-1933 — this item is cataloged by the U.S. Government under National Stock Number 5840-00-023-1933. Primary manufacturer part number: 21813-2.
Features
  • Amplifier-Monitor — FSC 5840
  • 2 verified cross-references
  • Primary manufacturer: L3 Technologies, Inc. Div Communication Systems-East
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Amplifier-Monitor, cataloged under National Stock Number 5840-00-023-1933, is classified within Federal Supply Class 5840 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is L3 Technologies, Inc. Div Communication Systems-East. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameAmplifier-Monitor
FSC / FSG5840 — No Item Name Available (FSG 58)
ManufacturersL3 Technologies, Inc. Div Communication Systems-East (CAGE 11447); Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (CAGE 49671)
Technical Specifications
ParameterValue
NSN5840-00-023-1933
Primary Part Number21813-2
Item NameAmplifier-Monitor
FSC / FSG5840 / 58 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div Communication Systems-East
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
2915-00-582-7007218132 INTERCHANGEABLE
Seal,fuel Control
Woodward, Inc. Div Fuel Systems and Controls
4710-01-484-9663NBLACK-4-035 INTERCHANGEABLE
Tube Assembly,metal
Connector Specialists Inc
Cross-Reference Index
Part NumberManufacturer
21813-2 PRIMARY L3 Technologies, Inc. Div Communication Systems-East (USA)
21813-2 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
Related Parts
2915-00-582-7007INTERCHANGEABLE
SEAL,FUEL CONTROL
218132
4710-01-484-9663INTERCHANGEABLE
TUBE ASSEMBLY,METAL
NBLACK-4-035

Frequently Asked Questions

What is NSN 5840-00-023-1933?

NSN 5840-00-023-1933 is a Amplifier-Monitor, manufactured by L3 Technologies, Inc. Div Communication Systems-East, classified under FSC 5840 (No Item Name Available). Status: active.

What are the part numbers for NSN 5840-00-023-1933?

NSN 5840-00-023-1933 has 2 cross-referenced part numbers: 21813-2 (L3 Technologies, Inc. Div Communication Systems-East), 21813-2 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin).

What NSN replaces 5840-00-023-1933?

There are 2 known substitutes for 5840-00-023-1933: 2915-00-582-7007, 4710-01-484-9663. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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