PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55850Leak Detector,refrigerant Gas

Mastercool Inc · NSN 4940-01-693-5663 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-01-693-5663 — this item is cataloged by the U.S. Government under National Stock Number 4940-01-693-5663. Primary manufacturer part number: 55850.
Features
  • Leak Detector,refrigerant Gas — FSC 4940
  • 1 verified cross-reference
  • Primary manufacturer: Mastercool Inc
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Leak Detector,refrigerant Gas, cataloged under National Stock Number 4940-01-693-5663, 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 Mastercool Inc. This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4940-01-693-5663
Primary Part Number55850
Item NameLeak Detector,refrigerant Gas
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerMastercool Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5910-00-284-4002191P82491T13 INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Sprague Electric Co World Hqs
5815-00-322-5607SM-B-187204 INTERCHANGEABLE
Teletypewriter Subassembly
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5110-01-346-5340 INTERCHANGEABLE
Utility Tool
Cross-Reference Index
Part NumberManufacturer
55850 PRIMARY Mastercool Inc (USA)
Related Parts
5910-00-284-4002INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
191P82491T13
5815-00-322-5607INTERCHANGEABLE
TELETYPEWRITER SUBASSEMBLY
SM-B-187204
5110-01-346-5340INTERCHANGEABLE
UTILITY TOOL

Frequently Asked Questions

What is NSN 4940-01-693-5663?

NSN 4940-01-693-5663 is a Leak Detector,refrigerant Gas, manufactured by Mastercool Inc, classified under FSC 4940 (No Item Name Available). Status: active.

What are the part numbers for NSN 4940-01-693-5663?

NSN 4940-01-693-5663 has 1 cross-referenced part number: 55850 (Mastercool Inc).

What NSN replaces 4940-01-693-5663?

There are 3 known substitutes for 4940-01-693-5663: 5910-00-284-4002, 5815-00-322-5607, 5110-01-346-5340. Verify interchangeability with system specifications before substitution.

What are the specifications of 55850?

Key specifications for 55850: Part Name Assigned by Controlling Agency: REFRIGERNANT LEAK DETECTOR KIT; Special Features: DETECTS COMBUSTIBLE GASES, HYDROGEN, AND REFRIGERANTS ALL CFC'S HCFC'S AND HRC'S, DISPLAY PROGRESSIVE LCD WITH VERTICAL BARS CORRESPONDING TO THE MAGNITUDE OF DETECTED LEAK, VISUAL INDICATION OF THE SELECTED SENSITIVITY RANGE, SENSOR LIFE 2000 HOURS, POWER TWO D BATTERIES,. 2 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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