PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

JMS-3451Glass,liquid Sight Indicator,fla

Clark-Reliance Llc Dba Jerguson Gage & Valve · NSN 6680-00-869-3550 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-869-3550 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-869-3550. Primary manufacturer part number: JMS-3451.
Features
  • Glass,liquid Sight Indicator,fla — FSC 6680
  • Design Type: PLAIN
  • Mica Shield: PROVIDED
  • Gasket: INCLUDED
  • Gage Rated Pressure: 5000.0 POUNDS PER SQUARE INCH LBS
  • Overall Thickness: 0.684 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
  • 3 verified cross-references
  • Primary manufacturer: Clark-Reliance Llc Dba Jerguson Gage & Valve
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 6680-00-869-3550, 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 Dba Jerguson Gage & Valve. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, 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
NSN6680-00-869-3550
Primary Part NumberJMS-3451
Item NameGlass,liquid Sight Indicator,fla
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerClark-Reliance Llc Dba Jerguson Gage & Valve
StatusACTIVE
Design TypePLAIN
Mica ShieldPROVIDED
GasketINCLUDED
Gage Rated Pressure5000.0 POUNDS PER SQUARE INCH LBS
Overall Thickness0.684 INCHES MINIMUM AND 0.688 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 3
5961-00-009-831720C4 INTERCHANGEABLE
Semiconductor Device,diode
International Rectifier Co (gb) Ltd
3417-00-196-7334 INTERCHANGEABLE
Milling Machine,horizontal,plain
4720-00-533-3476100R4-20 INTERCHANGEABLE
Hose,nonmetallic
Sae International Dba Sae International
Cross-Reference Index
Part NumberManufacturer
4HP Clark-Reliance Llc Dba Jerguson Gage & Valve (USA)
JMS-3451 PRIMARY Clark-Reliance Llc Dba Jerguson Gage & Valve (USA)
20-C4 Ernst & Whitney Pressure Products Inc (USA)
Related Parts
5961-00-009-8317INTERCHANGEABLE
SEMICONDUCTOR DEVICE,DIODE
20C4
3417-00-196-7334INTERCHANGEABLE
MILLING MACHINE,HORIZONTAL,PLAIN
4720-00-533-3476INTERCHANGEABLE
HOSE,NONMETALLIC
100R4-20

Frequently Asked Questions

What is NSN 6680-00-869-3550?

NSN 6680-00-869-3550 is a Glass,liquid Sight Indicator,fla, manufactured by Clark-Reliance Llc Dba Jerguson Gage & Valve, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-869-3550?

NSN 6680-00-869-3550 has 3 cross-referenced part numbers: 4HP (Clark-Reliance Llc Dba Jerguson Gage & Valve), JMS-3451 (Clark-Reliance Llc Dba Jerguson Gage & Valve), 20-C4 (Ernst & Whitney Pressure Products Inc).

What NSN replaces 6680-00-869-3550?

There are 3 known substitutes for 6680-00-869-3550: 5961-00-009-8317, 3417-00-196-7334, 4720-00-533-3476. Verify interchangeability with system specifications before substitution.

What are the specifications of JMS-3451?

Key specifications for JMS-3451: Design Type: PLAIN; Mica Shield: PROVIDED; Gasket: INCLUDED; Gage Rated Pressure: 5000.0 POUNDS PER SQUARE INCH LBS. 8 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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