PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HD-1243X/GAir Conditioner

Joint Electronics Type Designation System · NSN 4120-01-592-7987 · FSC 4120 · No Item Name Available
Verified by PartsTable
NSN 4120-01-592-7987 — this item is cataloged by the U.S. Government under National Stock Number 4120-01-592-7987. Primary manufacturer part number: HD-1243X/G.
Features
  • Air Conditioner — FSC 4120
  • Cabinet Material: ALUMINUM
  • Compressor Unit Type: HERMETICALLY SEALED
  • Design Current Rating in Amps: 18.2 NOMINAL
  • Condenser Cooling Type: AIR
  • Cooling Capacity in Btu Per Hour: 18000.0 NOMINAL
  • Heating Capacity in Btu Per Hour: 13000.0 NOMINAL
  • Power Source: TURBO-GENERATOR
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Air Conditioner, cataloged under National Stock Number 4120-01-592-7987, is classified within Federal Supply Class 4120 (No Item Name Available) of the Refrigeration, AC, and Air Circulating Equipment group. The primary manufacturer of record is Joint Electronics Type Designation System. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4120-01-592-7987
Primary Part NumberHD-1243X/G
Item NameAir Conditioner
FSC / FSG4120 / 41 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Cabinet MaterialALUMINUM
Compressor Unit TypeHERMETICALLY SEALED
Design Current Rating in Amps18.2 NOMINAL
Condenser Cooling TypeAIR
Cooling Capacity in Btu Per Hour18000.0 NOMINAL
Heating Capacity in Btu Per Hour13000.0 NOMINAL
Power SourceTURBO-GENERATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
4220-00-141-19031052-00 INTERCHANGEABLE
Regulator,single Ho
Aqualung Usa, Inc
2925-00-155-8073 INTERCHANGEABLE
Lock,terminal
5935-00-170-882313SG886 INTERCHANGEABLE
Connector,receptacle,electrical
Aimtron Systems, Llc
6515-00-386-760010-5200 INTERCHANGEABLE
Cannula,laryngeal
Boss Instruments, Limited Inc
5310-00-437-5263 INTERCHANGEABLE
Washer,flat
5975-00-490-1571105200 INTERCHANGEABLE
Mounting Base,electrical Equipme
Astronautics Corporation of America
5935-01-439-0571 INTERCHANGEABLE
Connector,receptacle,electrical
5935-01-439-0577 INTERCHANGEABLE
Connector,receptacle,electrical
6130-01-443-1247ELHB-1031 INTERCHANGEABLE
Power Supply
Arnold Magnetics Corporation Dba Arnold Magnetic Technologies
4440-01-581-1796 INTERCHANGEABLE
Desiccant Pack
Cross-Reference Index
Part NumberManufacturer
10-5200 Department of Defense Project Manager-Mobile Electric Power (USA)
10-5200 Mainstream Engineering Corp (USA)
HD-1243X/G PRIMARY Joint Electronics Type Designation System (USA)
Related Parts
4220-00-141-1903INTERCHANGEABLE
REGULATOR,SINGLE HO
1052-00
2925-00-155-8073INTERCHANGEABLE
LOCK,TERMINAL
5935-00-170-8823INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
13SG886
6515-00-386-7600INTERCHANGEABLE
CANNULA,LARYNGEAL
10-5200
5310-00-437-5263INTERCHANGEABLE
WASHER,FLAT
5975-00-490-1571INTERCHANGEABLE
MOUNTING BASE,ELECTRICAL EQUIPME
105200
5935-01-439-0571INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
5935-01-439-0577INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
6130-01-443-1247INTERCHANGEABLE
POWER SUPPLY
ELHB-1031
4440-01-581-1796INTERCHANGEABLE
DESICCANT PACK

Frequently Asked Questions

What is NSN 4120-01-592-7987?

NSN 4120-01-592-7987 is a Air Conditioner, manufactured by Joint Electronics Type Designation System, classified under FSC 4120 (No Item Name Available). Status: active.

What are the part numbers for NSN 4120-01-592-7987?

NSN 4120-01-592-7987 has 3 cross-referenced part numbers: 10-5200 (Department of Defense Project Manager-Mobile Electric Power), 10-5200 (Mainstream Engineering Corp), HD-1243X/G (Joint Electronics Type Designation System).

What NSN replaces 4120-01-592-7987?

There are 10 known substitutes for 4120-01-592-7987: 4220-00-141-1903, 2925-00-155-8073, 5935-00-170-8823 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of HD-1243X/G?

Key specifications for HD-1243X/G: Cabinet Material: ALUMINUM; Part Name Assigned by Controlling Agency: MODEL 18K IECU 208VAC VAC; Overall Width: 30.000 INCHES NOMINAL IN; Compressor Unit Type: HERMETICALLY SEALED. 13 total characteristics are documented in the Federal Logistics Information System.

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