PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A81Intercommunication Set

Andrea Systems Llc · NSN 5831-00-116-6503 · FSC 5831 · No Item Name Available
Verified by PartsTable
NSN 5831-00-116-6503 — this item is cataloged by the U.S. Government under National Stock Number 5831-00-116-6503. Primary manufacturer part number: A81.
Features
  • Intercommunication Set — FSC 5831
  • Accessory Identifying Number: AM-1963 TYPE NO. AND AM-1964 TYPE NO. AND AM-1965 TYPE NO. AND C-2104 TYPE NO. AND C-2106 TYPE NO. AND C-2611 TYPE NO. AND C-2105 TYPE NO. AND C-2323 TYPE NO.
  • Accessory Controlling Agency: JCENS
  • Accessory Component Quantity: 8
  • Transducer Quantity: 1
  • Station Quantity: 12
  • Transducer Type: HEADPHONE AND LOUDSPEAKER
  • Usage Design: INDOOR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Intercommunication Set, cataloged under National Stock Number 5831-00-116-6503, is classified within Federal Supply Class 5831 (No Item Name Available) of the Communication, Detection, and Coherent Radiation Equipment group. The primary manufacturer of record is Andrea Systems Llc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN5831-00-116-6503
Primary Part NumberA81
Item NameIntercommunication Set
FSC / FSG5831 / 58 — No Item Name Available
ManufacturerAndrea Systems Llc
StatusCANCELLED
Accessory Identifying NumberAM-1963 TYPE NO. AND AM-1964 TYPE NO. AND AM-1965 TYPE NO. AND C-2104 TYPE NO. AND C-2106 TYPE NO. AND C-2611 TYPE NO. AND C-2105 TYPE NO. AND C-2323 TYPE NO.
Accessory Controlling AgencyJCENS
Accessory Component Quantity8
Transducer Quantity1
Station Quantity12
Transducer TypeHEADPHONE AND LOUDSPEAKER
Usage DesignINDOOR
Electrical Transmission TypeWIRE
Furnished ItemsAMPLIFIER ASSY; AF AMPLIFIER; AF AMPLIFIER; INTERCOMMUNICATION SET CONTROL; INTERCOMMUNICATION SET CONTROL; SIGNAL MONITOR CONTROL; INTERCOMMUNICATION STATION; MONITOR PANEL
DC Voltage Rating27.5 VOLTS NOMINAL LOCATION NOT OTHERWISE SPECIFIED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 3
5945-00-321-0856A8-2 INTERCHANGEABLE
Relay Assembly
Honeywell International Inc. Dba Honeywell Div Aerospace ? Redmond Commercial
3120-00-662-8243 INTERCHANGEABLE
Bushing,sleeve
3030-01-061-7801 INTERCHANGEABLE
Belt,v
Cross-Reference Index
Part NumberManufacturer
A81 Andrea Systems Llc (USA)
M27543-1 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
ANAIC18 Joint Electronics Type Designation System (USA)
A81 Andrea Electronics Corporation (USA)
Related Parts
5945-00-321-0856INTERCHANGEABLE
RELAY ASSEMBLY
A8-2
3120-00-662-8243INTERCHANGEABLE
BUSHING,SLEEVE
3030-01-061-7801INTERCHANGEABLE
BELT,V

Frequently Asked Questions

What is NSN 5831-00-116-6503?

NSN 5831-00-116-6503 is a Intercommunication Set, manufactured by Andrea Systems Llc, classified under FSC 5831 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 5831-00-116-6503?

NSN 5831-00-116-6503 has 4 cross-referenced part numbers: A81 (Andrea Systems Llc), M27543-1 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), ANAIC18 (Joint Electronics Type Designation System), A81 (Andrea Electronics Corporation).

What NSN replaces 5831-00-116-6503?

There are 3 known substitutes for 5831-00-116-6503: 5945-00-321-0856, 3120-00-662-8243, 3030-01-061-7801. Verify interchangeability with system specifications before substitution.

What are the specifications of A81?

Key specifications for A81: Accessory Identifying Number: AM-1963 TYPE NO. AND AM-1964 TYPE NO. AND AM-1965 TYPE NO. AND C-2104 TYPE NO. AND C-2106 TYPE NO. AND C-2611 TYPE NO. AND C-2105 TYPE NO. AND C-2323 TYPE NO.; Accessory Controlling Agency: JCENS; Accessory Component Quantity: 8; Transducer Quantity: 1. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 5831-00-116-6503 still in active supply?

NSN 5831-00-116-6503 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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