PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

2121.02Circuit Tester,airc

Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments · NSN 4920-01-565-4271 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-01-565-4271 — this item is cataloged by the U.S. Government under National Stock Number 4920-01-565-4271. Primary manufacturer part number: 2121.02.
Features
  • Circuit Tester,airc — FSC 4920
  • 2 verified cross-references
  • Primary manufacturer: Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Circuit Tester,airc, cataloged under National Stock Number 4920-01-565-4271, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments. This item has 2 commercial cross-references from 2 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 NameCircuit Tester,airc
FSC / FSG4920 — No Item Name Available (FSG 49)
ManufacturersChauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments (CAGE 1HUX8); Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (CAGE 30003)
Technical Specifications
ParameterValue
NSN4920-01-565-4271
Primary Part Number2121.02
Item NameCircuit Tester,airc
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerChauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5935-00-577-2484117788 INTERCHANGEABLE
Plug,tip
Dne Technologies, Inc
1630-00-589-9168212102 INTERCHANGEABLE
Pawl,cylinder
Hydro-Aire Aerospace Corp
6515-01-577-1400212.102 INTERCHANGEABLE
Screw,bone
Depuy Synthes Sales Inc Dba Depuy Synthes Trauma Div Depuy Synthes Sales, Inc., D/b/a Depuy Synthes Trauma
Cross-Reference Index
Part NumberManufacturer
2121.02 PRIMARY Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments (USA)
3841AS3046-01 Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA)
Related Parts
5935-00-577-2484INTERCHANGEABLE
PLUG,TIP
117788
1630-00-589-9168INTERCHANGEABLE
PAWL,CYLINDER
212102
6515-01-577-1400INTERCHANGEABLE
SCREW,BONE
212.102

Frequently Asked Questions

What is NSN 4920-01-565-4271?

NSN 4920-01-565-4271 is a Circuit Tester,airc, manufactured by Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-01-565-4271?

NSN 4920-01-565-4271 has 2 cross-referenced part numbers: 2121.02 (Chauvin Arnoux, Inc. Dba Aemc Instruments Div Aemc Instruments), 3841AS3046-01 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).

What NSN replaces 4920-01-565-4271?

There are 3 known substitutes for 4920-01-565-4271: 5935-00-577-2484, 1630-00-589-9168, 6515-01-577-1400. Verify interchangeability with system specifications before substitution.

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