PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

HD-1243Y/GAir Conditioner

Joint Electronics Type Designation System · NSN 4120-01-592-7977 · FSC 4120 · No Item Name Available
Verified by PartsTable
NSN 4120-01-592-7977 — this item is cataloged by the U.S. Government under National Stock Number 4120-01-592-7977. Primary manufacturer part number: HD-1243Y/G.
Features
  • Air Conditioner — FSC 4120
  • Cooling Capacity in Btu Per Hour: 18000.0 NOMINAL
  • Heating Capacity in Btu Per Hour: 13000.0 NOMINAL
  • Compressor Unit Type: HERMETICALLY SEALED
  • Cabinet Material: ALUMINUM
  • Condenser Cooling Type: AIR
  • Power Source: TURBO-GENERATOR
  • 3 verified cross-references
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Air Conditioner, cataloged under National Stock Number 4120-01-592-7977, 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 6 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4120-01-592-7977
Primary Part NumberHD-1243Y/G
Item NameAir Conditioner
FSC / FSG4120 / 41 — No Item Name Available
ManufacturerJoint Electronics Type Designation System
StatusACTIVE
Cooling Capacity in Btu Per Hour18000.0 NOMINAL
Heating Capacity in Btu Per Hour13000.0 NOMINAL
Compressor Unit TypeHERMETICALLY SEALED
Cabinet MaterialALUMINUM
Condenser Cooling TypeAIR
Power SourceTURBO-GENERATOR
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
4730-00-172-0025AS15003-3 INTERCHANGEABLE
Fitting,lubrication
Sae International Dba Sae International
5130-00-190-0504105-100 INTERCHANGEABLE
Tool Kit,fastener Removal
Huck International, Inc. Div Kingston Operations
5365-00-200-6393 INTERCHANGEABLE
Bushing,nonmetallic
4730-00-689-317810-5100 INTERCHANGEABLE
Bushing,pipe
Neac Compressor Service Usa Inc
4240-01-250-2286105110 INTERCHANGEABLE
Cartridge,respirator,air Filteri
Honeywell Safety Products Usa, Inc.
3950-01-297-0893AH1000C INTERCHANGEABLE
Hoist,chain
Jpw Industries Inc. Dba Jpw Industries Inc
4130-01-700-2884LCAC100-512-T4 INTERCHANGEABLE
Condenser Coil,refrigeration
Snowbird Technologies Inc.
Cross-Reference Index
Part NumberManufacturer
HD-1243Y/G PRIMARY Joint Electronics Type Designation System (USA)
10-5100 Mainstream Engineering Corp (USA)
10-5100 Department of Defense Project Manager-Mobile Electric Power (USA)
Related Parts
4730-00-172-0025INTERCHANGEABLE
FITTING,LUBRICATION
AS15003-3
5130-00-190-0504INTERCHANGEABLE
TOOL KIT,FASTENER REMOVAL
105-100
5365-00-200-6393INTERCHANGEABLE
BUSHING,NONMETALLIC
4730-00-689-3178INTERCHANGEABLE
BUSHING,PIPE
10-5100
4240-01-250-2286INTERCHANGEABLE
CARTRIDGE,RESPIRATOR,AIR FILTERI
105110
3950-01-297-0893INTERCHANGEABLE
HOIST,CHAIN
AH1000C
4130-01-700-2884INTERCHANGEABLE
CONDENSER COIL,REFRIGERATION
LCAC100-512-T4

Frequently Asked Questions

What is NSN 4120-01-592-7977?

NSN 4120-01-592-7977 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 4120-01-592-7977?

NSN 4120-01-592-7977 has 3 cross-referenced part numbers: HD-1243Y/G (Joint Electronics Type Designation System), 10-5100 (Mainstream Engineering Corp), 10-5100 (Department of Defense Project Manager-Mobile Electric Power).

What NSN replaces 4120-01-592-7977?

There are 7 known substitutes for 4120-01-592-7977: 4730-00-172-0025, 5130-00-190-0504, 5365-00-200-6393 and 4 more. Verify interchangeability with system specifications before substitution.

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

Key specifications for HD-1243Y/G: Cooling Capacity in Btu Per Hour: 18000.0 NOMINAL; End Item Identification: AC AND SUPPORT EQ; Heating Capacity in Btu Per Hour: 13000.0 NOMINAL; 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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