PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21734Circulator

L3 Technologies, Inc. Div Communication Systems-East · NSN 5840-00-023-1923 · FSC 5840 · No Item Name Available
Verified by PartsTable
NSN 5840-00-023-1923 — this item is cataloged by the U.S. Government under National Stock Number 5840-00-023-1923. Primary manufacturer part number: 21734.
Features
  • Circulator — FSC 5840
  • 4 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 Circulator, cataloged under National Stock Number 5840-00-023-1923, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCirculator
FSC / FSG5840 — No Item Name Available (FSG 58)
ManufacturersRantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc (CAGE 04971); Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (CAGE 49671); L3 Technologies, Inc. Div Communication Systems-East (CAGE 11447)
Technical Specifications
ParameterValue
NSN5840-00-023-1923
Primary Part Number21734
Item NameCirculator
FSC / FSG5840 / 58 — No Item Name Available
ManufacturerL3 Technologies, Inc. Div Communication Systems-East
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
3830-00-164-94460121734 INTERCHANGEABLE
Cutting Edge
New Holland Construction
6625-00-358-631921734 INTERCHANGEABLE
Ammeter
Mitsubishi Caterpillar Forklift America, Inc
3120-00-804-4473F52606-402 INTERCHANGEABLE
Bushing,sleeve
The Boeing Company Div Defense
Cross-Reference Index
Part NumberManufacturer
CLF1-17 Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc (USA)
21734 Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
21734REVK Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin (USA)
21734 PRIMARY L3 Technologies, Inc. Div Communication Systems-East (USA)
Related Parts
3830-00-164-9446INTERCHANGEABLE
CUTTING EDGE
0121734
6625-00-358-6319INTERCHANGEABLE
AMMETER
21734
3120-00-804-4473INTERCHANGEABLE
BUSHING,SLEEVE
F52606-402

Frequently Asked Questions

What is NSN 5840-00-023-1923?

NSN 5840-00-023-1923 is a Circulator, 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 5840-00-023-1923?

NSN 5840-00-023-1923 has 4 cross-referenced part numbers: CLF1-17 (Rantec Microwave Systems, Inc. Dba Rantec Microwave Systems Inc), 21734 (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 21734REVK (Lockheed Martin Corporation Dba Lockheed Martin Div Lockheed Martin), 21734 (L3 Technologies, Inc. Div Communication Systems-East).

What NSN replaces 5840-00-023-1923?

There are 3 known substitutes for 5840-00-023-1923: 3830-00-164-9446, 6625-00-358-6319, 3120-00-804-4473. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com