PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

H10ALeak Detector,refrigerant Gas

Ametek Inc Div Aerospace and Defense · NSN 4940-00-994-1803 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-00-994-1803 — this item is cataloged by the U.S. Government under National Stock Number 4940-00-994-1803. Primary manufacturer part number: H10A.
Features
  • Leak Detector,refrigerant Gas — FSC 4940
  • General Characteristics Item Description: 120V,60HZ OR 240V,50HZ OPERATION;3 LEVEL SENSITIVITY;VINYL CASE;AUDIBLE AND VISUAL ALARMS V
  • 6 verified cross-references
  • Primary manufacturer: Ametek Inc Div Aerospace and Defense
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Leak Detector,refrigerant Gas, cataloged under National Stock Number 4940-00-994-1803, is classified within Federal Supply Class 4940 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Ametek Inc Div Aerospace and Defense. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4940-00-994-1803
Primary Part NumberH10A
Item NameLeak Detector,refrigerant Gas
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerAmetek Inc Div Aerospace and Defense
StatusACTIVE
General Characteristics Item Description120V,60HZ OR 240V,50HZ OPERATION;3 LEVEL SENSITIVITY;VINYL CASE;AUDIBLE AND VISUAL ALARMS V
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
2920-00-050-1034385411 R91 INTERCHANGEABLE
Spark Plug
Navistar Intl Corp Melrose Park Engine Plant Location /melrose Park/
7520-00-142-93527000031087 INTERCHANGEABLE
Dispenser,pressure Sensitive Adh
3m Company
5365-00-168-3225751-003022 INTERCHANGEABLE
Ring,lifting
Nelson Stud Welding, Inc. Dba Nelson Stud Welding Inc
5935-00-280-22191JC2189-22 INTERCHANGEABLE
Backshell,electrical Connector
Westinghouse Electric Corp
6670-00-280-2396SECURA224-1S INTERCHANGEABLE
Balance,analytical
Sartorius Corporation
4520-00-378-9684H10 INTERCHANGEABLE
Heating Element,electrical,nonim
Siemens Energy and Automation Inc Siemens Furnas Controls Div
6240-00-505-6099XL678/C10 INTERCHANGEABLE
Lamp,concentrated Arc
Teledyne Uk Limited
5935-00-765-1238H10 INTERCHANGEABLE
Shell,electrical Connector
Winchester Interconnect Corporation Dba Winchester Interconnect Div Winchester Interconnect
5935-00-924-4424900285-0025-000 INTERCHANGEABLE
Shell,electrical Connector
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
5340-00-997-4448B286 INTERCHANGEABLE
Crank,hand
Arcosa Marine Components, Llc
Cross-Reference Index
Part NumberManufacturer
H10A PRIMARY Ametek Inc Div Aerospace and Defense (USA)
420805AAAA3 PRIMARY Yokogawa Corporation of America (USA)
H10B PRIMARY Ametek Inc Div Aerospace and Defense (USA)
420-805AAA3 PRIMARY Duran Distributing, Inc Dba Quality Distributing Company (USA)
50-420805AAAA3 General Electric Co Instrument Products Section (USA)
H10 Ametek Inc Div Aerospace and Defense (USA)
Related Parts
2920-00-050-1034INTERCHANGEABLE
SPARK PLUG
385411 R91
7520-00-142-9352INTERCHANGEABLE
DISPENSER,PRESSURE SENSITIVE ADH
7000031087
5365-00-168-3225INTERCHANGEABLE
RING,LIFTING
751-003022
5935-00-280-2219INTERCHANGEABLE
BACKSHELL,ELECTRICAL CONNECTOR
1JC2189-22
6670-00-280-2396INTERCHANGEABLE
BALANCE,ANALYTICAL
SECURA224-1S
4520-00-378-9684INTERCHANGEABLE
HEATING ELEMENT,ELECTRICAL,NONIM
H10
6240-00-505-6099INTERCHANGEABLE
LAMP,CONCENTRATED ARC
XL678/C10
5935-00-765-1238INTERCHANGEABLE
SHELL,ELECTRICAL CONNECTOR
H10
5935-00-924-4424INTERCHANGEABLE
SHELL,ELECTRICAL CONNECTOR
900285-0025-000
5340-00-997-4448INTERCHANGEABLE
CRANK,HAND
B286
5330-01-027-6327INTERCHANGEABLE
GASKET
H-10
5935-01-060-4944INTERCHANGEABLE
SHELL,ELECTRICAL CONNECTOR
H10

Frequently Asked Questions

What is NSN 4940-00-994-1803?

NSN 4940-00-994-1803 is a Leak Detector,refrigerant Gas, manufactured by Ametek Inc Div Aerospace and Defense, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-00-994-1803?

NSN 4940-00-994-1803 has 6 cross-referenced part numbers: H10A (Ametek Inc Div Aerospace and Defense), 420805AAAA3 (Yokogawa Corporation of America), H10B (Ametek Inc Div Aerospace and Defense), 420-805AAA3 (Duran Distributing, Inc Dba Quality Distributing Company), 50-420805AAAA3 (General Electric Co Instrument Products Section) and 1 more.

What NSN replaces 4940-00-994-1803?

There are 12 known substitutes for 4940-00-994-1803: 2920-00-050-1034, 7520-00-142-9352, 5365-00-168-3225 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of H10A?

Key specifications for H10A: General Characteristics Item Description: 120V,60HZ OR 240V,50HZ OPERATION;3 LEVEL SENSITIVITY;VINYL CASE;AUDIBLE AND VISUAL ALARMS V. 1 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com