PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JMS-8191Glass,liquid Sight Indicator,fla

Clark-Reliance Llc · NSN 6680-00-794-4776 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-794-4776 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-794-4776. Primary manufacturer part number: JMS-8191.
Features
  • Glass,liquid Sight Indicator,fla — FSC 6680
  • Usage Design: W/BOILER GAGE
  • Design Type: REFLEX
  • 4 verified cross-references
  • Primary manufacturer: Clark-Reliance Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Glass,liquid Sight Indicator,fla, cataloged under National Stock Number 6680-00-794-4776, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Clark-Reliance Llc. Government technical data includes 2 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-00-794-4776
Primary Part NumberJMS-8191
Item NameGlass,liquid Sight Indicator,fla
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerClark-Reliance Llc
StatusACTIVE
Usage DesignW/BOILER GAGE
Design TypeREFLEX
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3455-00-007-9628 INTERCHANGEABLE
File,rotary
5940-00-113-982033220 INTERCHANGEABLE
Terminal,lug
Te Connectivity Corporation
3030-00-269-9714614 INTERCHANGEABLE
Belt,v
Gates Corporation
5305-00-520-5568722-031-205 INTERCHANGEABLE
Screw,machine
Parker-Hannifin Corporation Dba Service and Support Operation Div Services and Support Operations
6685-00-875-942233220 INTERCHANGEABLE
Thermostat,flow Control
Vulcan-Hart Corp
8120-01-051-222933220 INTERCHANGEABLE
Cylinder,compressed Gas
Tyco Fire Products Lp
5330-01-191-234333220 INTERCHANGEABLE
Gasket
Elkhart Brass Manufacturing Company, Llc Div Elkhart Brass Manufacturing Company
5310-01-611-001633220 INTERCHANGEABLE
Washer,flat
Fastenal Company Dba Fastenal Co
5920-01-628-776833220 INTERCHANGEABLE
Absorber,overvoltage
U.s. Ordnance
Cross-Reference Index
Part NumberManufacturer
JMS-8191 PRIMARY Clark-Reliance Llc (USA)
332-20 Clark-Reliance Llc Dba Jerguson Gage & Valve (USA)
332-20DB Clark-Reliance Llc Dba Jerguson Gage & Valve (USA)
332 Clark-Reliance Llc Dba Jerguson Gage & Valve (USA)
Related Parts
3455-00-007-9628INTERCHANGEABLE
FILE,ROTARY
5940-00-113-9820INTERCHANGEABLE
TERMINAL,LUG
33220
3030-00-269-9714INTERCHANGEABLE
BELT,V
614
5305-00-520-5568INTERCHANGEABLE
SCREW,MACHINE
722-031-205
6685-00-875-9422INTERCHANGEABLE
THERMOSTAT,FLOW CONTROL
33220
8120-01-051-2229INTERCHANGEABLE
CYLINDER,COMPRESSED GAS
33220
5330-01-191-2343INTERCHANGEABLE
GASKET
33220
5310-01-611-0016INTERCHANGEABLE
WASHER,FLAT
33220
5920-01-628-7768INTERCHANGEABLE
ABSORBER,OVERVOLTAGE
33220

Frequently Asked Questions

What is NSN 6680-00-794-4776?

NSN 6680-00-794-4776 is a Glass,liquid Sight Indicator,fla, manufactured by Clark-Reliance Llc, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-794-4776?

NSN 6680-00-794-4776 has 4 cross-referenced part numbers: JMS-8191 (Clark-Reliance Llc), 332-20 (Clark-Reliance Llc Dba Jerguson Gage & Valve), 332-20DB (Clark-Reliance Llc Dba Jerguson Gage & Valve), 332 (Clark-Reliance Llc Dba Jerguson Gage & Valve).

What NSN replaces 6680-00-794-4776?

There are 9 known substitutes for 6680-00-794-4776: 3455-00-007-9628, 5940-00-113-9820, 3030-00-269-9714 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of JMS-8191?

Key specifications for JMS-8191: Usage Design: W/BOILER GAGE; Design Type: REFLEX. 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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