PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

378640Ignition Unit,high Voltage

Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix · NSN 2920-00-731-0185 · FSC 2920 · No Item Name Available
Verified by PartsTable
NSN 2920-00-731-0185 — this item is cataloged by the U.S. Government under National Stock Number 2920-00-731-0185. Primary manufacturer part number: 378640.
Features
  • Ignition Unit,high Voltage — FSC 2920
  • General Characteristics Item Description: 10 TO 30 V,4.5 AMP,1 SPARK PER SECOND AT 10 V,4.0 JOULES PER SPARK,18000 V NOM OUTPUT,0.750-20UNEF-3A THD TERMINAL,1.344 IN. MIN,1.406 IN. MAX LG,0.625-24NEF-2A THD INPUT CONNECTOR,0.802 IN. MIN,0.864 IN. MAX LG,UNIT DIM. EXCLUDING TERMINAL AND CONNECTOR,6.562 IN. W,2.760 IN. LG,3.115 IN. H V
  • FSC Application Data: ENGINE ELECTRICAL SYSTEM COMPONENTS,NONAIRCRAFT
  • 7 verified cross-references
  • Primary manufacturer: Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Ignition Unit,high Voltage, cataloged under National Stock Number 2920-00-731-0185, is classified within Federal Supply Class 2920 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN2920-00-731-0185
Primary Part Number378640
Item NameIgnition Unit,high Voltage
FSC / FSG2920 / 29 — No Item Name Available
ManufacturerHoneywell International Inc. Dba Honeywell International Div Aerospace - Phoenix
StatusACTIVE
General Characteristics Item Description10 TO 30 V,4.5 AMP,1 SPARK PER SECOND AT 10 V,4.0 JOULES PER SPARK,18000 V NOM OUTPUT,0.750-20UNEF-3A THD TERMINAL,1.344 IN. MIN,1.406 IN. MAX LG,0.625-24NEF-2A THD INPUT CONNECTOR,0.802 IN. MIN,0.864 IN. MAX LG,UNIT DIM. EXCLUDING TERMINAL AND CONNECTOR,6.562 IN. W,2.760 IN. LG,3.115 IN. H V
FSC Application DataENGINE ELECTRICAL SYSTEM COMPONENTS,NONAIRCRAFT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5950-00-024-099270-1390 INTERCHANGEABLE
Transformer,pulse
Department of Defense Project Manager-Mobile Electric Power
5130-00-177-6968 INTERCHANGEABLE
Adapter,socket Wrench
2930-01-433-255019913 INTERCHANGEABLE
Cooler,lubricating Oil,engine
Adams Thermal Systems Inc
Cross-Reference Index
Part NumberManufacturer
42664 Unison Industries Llc (USA)
42664 Unison Industries, Llc Dba Unison Industries Inc (USA)
378640 PRIMARY Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix (USA)
378640 Alliedsignal Inc Dba Allied-Signal Aerospace Co (USA)
378640 Honeywell International Inc. Div Aerospace - Torrance (USA)
10-381175-2 Unison Industries Llc (USA)
10-381175-2 Amphenol Corp Div Amphenol Aerospace Operations (USA)
Related Parts
5950-00-024-0992INTERCHANGEABLE
TRANSFORMER,PULSE
70-1390
5130-00-177-6968INTERCHANGEABLE
ADAPTER,SOCKET WRENCH
2930-01-433-2550INTERCHANGEABLE
COOLER,LUBRICATING OIL,ENGINE
19913

Frequently Asked Questions

What is NSN 2920-00-731-0185?

NSN 2920-00-731-0185 is a Ignition Unit,high Voltage, manufactured by Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix, classified under FSC 2920 (No Item Name Available). Status: active.

What are the part numbers for NSN 2920-00-731-0185?

NSN 2920-00-731-0185 has 7 cross-referenced part numbers: 42664 (Unison Industries Llc), 42664 (Unison Industries, Llc Dba Unison Industries Inc), 378640 (Honeywell International Inc. Dba Honeywell International Div Aerospace - Phoenix), 378640 (Alliedsignal Inc Dba Allied-Signal Aerospace Co), 378640 (Honeywell International Inc. Div Aerospace - Torrance) and 2 more.

What NSN replaces 2920-00-731-0185?

There are 3 known substitutes for 2920-00-731-0185: 5950-00-024-0992, 5130-00-177-6968, 2930-01-433-2550. Verify interchangeability with system specifications before substitution.

What are the specifications of 378640?

Key specifications for 378640: General Characteristics Item Description: 10 TO 30 V,4.5 AMP,1 SPARK PER SECOND AT 10 V,4.0 JOULES PER SPARK,18000 V NOM OUTPUT,0.750-20UNEF-3A THD TERMINAL,1.344 IN. MIN,1.406 IN. MAX LG,0.625-24NEF-2A THD INPUT CONNECTOR,0.802 IN. MIN,0.864 IN. MAX LG,UNIT DIM. EXCLUDING TERMINAL AND CONNECTOR,6.562 IN. W,2.760 IN. LG,3.115 IN. H V; End Item Identification: NHA 378485,U/O GTCP85-102 378452-1; FSC Application Data: ENGINE ELECTRICAL SYSTEM COMPONENTS,NONAIRCRAFT. 3 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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