PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21-150Detector,gas Leak

Gow-Mac Instrument Co Div Gow-Mac Instrument Company · NSN 6665-01-120-6651 · FSC 6665 · No Item Name Available
Verified by PartsTable
NSN 6665-01-120-6651 — this item is cataloged by the U.S. Government under National Stock Number 6665-01-120-6651. Primary manufacturer part number: 21-150.
Features
  • Detector,gas Leak — FSC 6665
  • 1 verified cross-reference
  • Primary manufacturer: Gow-Mac Instrument Co Div Gow-Mac Instrument Company
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Detector,gas Leak, cataloged under National Stock Number 6665-01-120-6651, is classified within Federal Supply Class 6665 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Gow-Mac Instrument Co Div Gow-Mac Instrument Company. 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 NameDetector,gas Leak
FSC / FSG6665 — No Item Name Available (FSG 66)
ManufacturersGow-Mac Instrument Co Div Gow-Mac Instrument Company (CAGE 25709)
Technical Specifications
ParameterValue
NSN6665-01-120-6651
Primary Part Number21-150
Item NameDetector,gas Leak
FSC / FSG6665 / 66 — No Item Name Available
ManufacturerGow-Mac Instrument Co Div Gow-Mac Instrument Company
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5307-00-206-1459111 INTERCHANGEABLE
Stud,plain
Industrial Technologies and Services Llc
5330-00-300-5454 INTERCHANGEABLE
Seal,needle,filler
5330-00-399-603221150 INTERCHANGEABLE
Packing,preformed
Paccar Winch Inc Dba Paccar Winch Division
5961-00-759-1449 INTERCHANGEABLE
Semiconductor Device Assembly
4820-00-925-466321-150 INTERCHANGEABLE
Valve,pneumatic Tank
Cpi Satcom & Antenna Technologies Inc.
3030-01-017-796521150 INTERCHANGEABLE
Belt,cooler Unit
Noske-Kaeser Germany Gmbh
5935-01-047-3958 INTERCHANGEABLE
Connector,plug,electrical
5935-01-107-951721150 INTERCHANGEABLE
Connector,receptacle,electrical
Smiths Aerospace, Inc., Electronic Systems-Grand Rapids
1650-01-309-381021150 INTERCHANGEABLE
Mount-Flange Assembly
Parker Hannifin Corporation Div Hydraulic Systems Division
3110-01-353-4482 INTERCHANGEABLE
Cup,tapered Roller Bearing
Cross-Reference Index
Part NumberManufacturer
21-150 Gow-Mac Instrument Co Div Gow-Mac Instrument Company (USA)
Related Parts
5307-00-206-1459INTERCHANGEABLE
STUD,PLAIN
111
5330-00-300-5454INTERCHANGEABLE
SEAL,NEEDLE,FILLER
5330-00-399-6032INTERCHANGEABLE
PACKING,PREFORMED
21150
5961-00-759-1449INTERCHANGEABLE
SEMICONDUCTOR DEVICE ASSEMBLY
4820-00-925-4663INTERCHANGEABLE
VALVE,PNEUMATIC TANK
21-150
3030-01-017-7965INTERCHANGEABLE
BELT,COOLER UNIT
21150
5935-01-047-3958INTERCHANGEABLE
CONNECTOR,PLUG,ELECTRICAL
5935-01-107-9517INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
21150
1650-01-309-3810INTERCHANGEABLE
MOUNT-FLANGE ASSEMBLY
21150
3110-01-353-4482INTERCHANGEABLE
CUP,TAPERED ROLLER BEARING
3120-01-355-9226INTERCHANGEABLE
BUSHING,SLEEVE
21150
5950-01-399-7258INTERCHANGEABLE
TRANSFORMER,POWER
21150

Frequently Asked Questions

What is NSN 6665-01-120-6651?

NSN 6665-01-120-6651 is a Detector,gas Leak, manufactured by Gow-Mac Instrument Co Div Gow-Mac Instrument Company, classified under FSC 6665 (No Item Name Available). Status: active.

What are the part numbers for NSN 6665-01-120-6651?

NSN 6665-01-120-6651 has 1 cross-referenced part number: 21-150 (Gow-Mac Instrument Co Div Gow-Mac Instrument Company).

What NSN replaces 6665-01-120-6651?

There are 12 known substitutes for 6665-01-120-6651: 5307-00-206-1459, 5330-00-300-5454, 5330-00-399-6032 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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