PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

MILAC921Air Conditioner

Ellis & Watts International, Llc · NSN 4120-00-702-1674 · FSC 4120 · No Item Name Available
Verified by PartsTable
NSN 4120-00-702-1674 — this item is cataloged by the U.S. Government under National Stock Number 4120-00-702-1674. Primary manufacturer part number: MILAC921.
Features
  • Air Conditioner — FSC 4120
  • Frequency Rating: 60.0 HERTZ NOMINAL
  • Cooling Capacity in Btu Per Hour: 120000.0 NOMINAL
  • Phase: THREE
  • Condenser Cooling Type: AIR
  • Surface Treatment: ENAMEL
  • Coolant Type: FREON-12
  • Nominal Heating Capacity: 3500.0 CUBIC FEET PER MINUTE
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Air Conditioner, cataloged under National Stock Number 4120-00-702-1674, 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 Ellis & Watts International, Llc. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4120-00-702-1674
Primary Part NumberMILAC921
Item NameAir Conditioner
FSC / FSG4120 / 41 — No Item Name Available
ManufacturerEllis & Watts International, Llc
StatusACTIVE
Frequency Rating60.0 HERTZ NOMINAL
Cooling Capacity in Btu Per Hour120000.0 NOMINAL
PhaseTHREE
Condenser Cooling TypeAIR
Surface TreatmentENAMEL
Coolant TypeFREON-12
Nominal Heating Capacity3500.0 CUBIC FEET PER MINUTE
Current TypeAC
Mounting TypeTRAILER
Voltage Rating208.0 VOLTS NOMINAL
Heating Capacity in Btu Per Hour63500.0 NOMINAL
Nominal Cooling Capacity3500.0 CUBIC FEET PER MINUTE
Power SourceELECTRIC MOTOR
Electric Motor Quantity6
Cabinet MaterialSTEEL
Compressor Unit TypeSEMIHERMETIC
Usage DesignCOMPRESSOR,FAN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
3455-00-021-2410 INTERCHANGEABLE
File,rotary
5310-00-122-5484175607 INTERCHANGEABLE
Nut,plain,wing
Lockheed Martin Corp
4920-00-226-6200JD1 INTERCHANGEABLE
Charger,impulse
Phelon R E Co Inc
2915-00-674-7391175607 INTERCHANGEABLE
Parts Kit,main Fuel,overhaul
Woodward, Inc. Div Fuel Systems and Controls
Cross-Reference Index
Part NumberManufacturer
HD607MSQ54 Joint Electronics Type Designation System (USA)
MILAC921 PRIMARY Ellis & Watts International, Llc (USA)
JD1 Ellis & Watts International, Llc (USA)
175607 Edo (USA)
Related Parts
3455-00-021-2410INTERCHANGEABLE
FILE,ROTARY
5310-00-122-5484INTERCHANGEABLE
NUT,PLAIN,WING
175607
4920-00-226-6200INTERCHANGEABLE
CHARGER,IMPULSE
JD1
2915-00-674-7391INTERCHANGEABLE
PARTS KIT,MAIN FUEL,OVERHAUL
175607

Frequently Asked Questions

What is NSN 4120-00-702-1674?

NSN 4120-00-702-1674 is a Air Conditioner, manufactured by Ellis & Watts International, Llc, classified under FSC 4120 (No Item Name Available). Status: active.

What are the part numbers for NSN 4120-00-702-1674?

NSN 4120-00-702-1674 has 4 cross-referenced part numbers: HD607MSQ54 (Joint Electronics Type Designation System), MILAC921 (Ellis & Watts International, Llc), JD1 (Ellis & Watts International, Llc), 175607 (Edo).

What NSN replaces 4120-00-702-1674?

There are 4 known substitutes for 4120-00-702-1674: 3455-00-021-2410, 5310-00-122-5484, 4920-00-226-6200 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of MILAC921?

Key specifications for MILAC921: Frequency Rating: 60.0 HERTZ NOMINAL; Cooling Capacity in Btu Per Hour: 120000.0 NOMINAL; Phase: THREE; Condenser Cooling Type: AIR. 18 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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