PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

55200Leak Detector,refrigerant Gas

Mastercool Inc · NSN 4940-01-612-5998 · FSC 4940 · No Item Name Available
Verified by PartsTable
NSN 4940-01-612-5998 — this item is cataloged by the U.S. Government under National Stock Number 4940-01-612-5998. Primary manufacturer part number: 55200.
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 4940-01-612-5998, 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameLeak Detector,refrigerant Gas
FSC / FSG4940 — No Item Name Available (FSG 49)
ManufacturersMastercool Inc (CAGE 4YH84)
Technical Specifications
ParameterValue
NSN4940-01-612-5998
Primary Part Number55200
Item NameLeak Detector,refrigerant Gas
FSC / FSG4940 / 49 — No Item Name Available
ManufacturerMastercool Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5306-00-021-67821A9859 INTERCHANGEABLE
Bolt,machine
Napco International Llc Dba Napco International Inc
3110-00-100-362955200 INTERCHANGEABLE
Cone and Rollers,tapered Roller
Rbc Bearings Incorporated Div West Trenton Division
5330-00-154-84272307 INTERCHANGEABLE
Seal,plain Encased
Rexnord Industries Llc
5330-00-285-946711815 INTERCHANGEABLE
Seal,plain Encased
Tiffin Parts, L.l.c. Div Subsidiary of Pettibone Corp.
5950-00-518-202555200 INTERCHANGEABLE
Coil,radio Frequency
L3harris Technologies, Inc Div Space & Airborne Systems
5985-00-581-1446 INTERCHANGEABLE
Attenuator,variable
5975-00-665-0648 INTERCHANGEABLE
Bushing,electrical Conduit
5977-01-008-64605305-178-015 INTERCHANGEABLE
Holder Assembly,electrical Conta
Warner Electric Brake and Clutch Co Hq
5961-01-110-30351854-0815 INTERCHANGEABLE
Transistor
Keysight Technologies Inc
2530-01-147-642315665667 INTERCHANGEABLE
Caliper Assembly,disc Brake
General Motors Llc Dba General Motors Llc
Cross-Reference Index
Part NumberManufacturer
55200 PRIMARY Mastercool Inc (USA)
Related Parts
5306-00-021-6782INTERCHANGEABLE
BOLT,MACHINE
1A9859
3110-00-100-3629INTERCHANGEABLE
CONE AND ROLLERS,TAPERED ROLLER
55200
5330-00-154-8427INTERCHANGEABLE
SEAL,PLAIN ENCASED
2307
5330-00-285-9467INTERCHANGEABLE
SEAL,PLAIN ENCASED
11815
5950-00-518-2025INTERCHANGEABLE
COIL,RADIO FREQUENCY
55200
5985-00-581-1446INTERCHANGEABLE
ATTENUATOR,VARIABLE
5975-00-665-0648INTERCHANGEABLE
BUSHING,ELECTRICAL CONDUIT
5977-01-008-6460INTERCHANGEABLE
HOLDER ASSEMBLY,ELECTRICAL CONTA
5305-178-015
5961-01-110-3035INTERCHANGEABLE
TRANSISTOR
1854-0815
2530-01-147-6423INTERCHANGEABLE
CALIPER ASSEMBLY,DISC BRAKE
15665667
5330-01-173-0796INTERCHANGEABLE
SEAL
552-00
5110-01-414-5406INTERCHANGEABLE
ADAPTER KIT,MULTI-TOOL
05200

Frequently Asked Questions

What is NSN 4940-01-612-5998?

NSN 4940-01-612-5998 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 4940-01-612-5998?

NSN 4940-01-612-5998 has 1 cross-referenced part number: 55200 (Mastercool Inc).

What NSN replaces 4940-01-612-5998?

There are 12 known substitutes for 4940-01-612-5998: 5306-00-021-6782, 3110-00-100-3629, 5330-00-154-8427 and 9 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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