PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SGIDIRMG/TIndicator,sight,liquid

Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M · NSN 6680-00-290-7301 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-290-7301 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-290-7301. Primary manufacturer part number: SGIDIRMG/T.
Features
  • Indicator,sight,liquid — FSC 6680
  • End Connection Type: UNABLE TO DECODE
  • Nominal Pipe Size for Which Designed: UNABLE TO DECODE
  • Nominal Thread Size: UNABLE TO DECODE
  • Thread Series Designator: UNABLE TO DECODE
  • Style Designator: GAGE VALVE
  • Nondefinitive Spec/std Data: I TYPE AND A CLASS
  • Data Furnishing Method: CLEAR WINDOW
Applications
  • Applications requiring Copper Alloy construction
General Description

The Indicator,sight,liquid, cataloged under National Stock Number 6680-00-290-7301, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references 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.

Technical Specifications
ParameterValue
NSN6680-00-290-7301
Primary Part NumberSGIDIRMG/T
Item NameIndicator,sight,liquid
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerMilitary Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
StatusACTIVE
End Connection TypeUNABLE TO DECODE
Nominal Pipe Size for Which DesignedUNABLE TO DECODE
Nominal Thread SizeUNABLE TO DECODE
Thread Series DesignatorUNABLE TO DECODE
Style DesignatorGAGE VALVE
Nondefinitive Spec/std DataI TYPE AND A CLASS
Data Furnishing MethodCLEAR WINDOW
Thread Quantity Per InchUNABLE TO DECODE
Furnished DataLIQUID LEVEL
Media for Which DesignedANY ACCEPTABLE
MaterialCOPPER ALLOY
Distance Between Mounting Facility Centers23.250 INCHES MAXIMUM IN
Sight Height21.250 INCHES NOMINAL IN
Maximum Working Pressure100.0 POUNDS PER SQUARE INCH (PSI) LBS
Sight Diameter0.625 INCHES NOMINAL IN
Guard Rod Quantity4
Maximum Temp Rating270.0 FAHRENHEIT DEGF
Thread DirectionUNABLE TO DECODE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6680-00-290-7299 INTERCHANGEABLE
Indicator,sight,liquid
6680-00-290-7300 INTERCHANGEABLE
Indicator,sight,liquid
6680-00-290-7302 INTERCHANGEABLE
Indicator,sight,liquid
6680-00-290-7304 INTERCHANGEABLE
Indicator,sight,liquid
6680-01-115-6125 INTERCHANGEABLE
Indicator,sight,liquid
6680-01-133-67352448-012 INTERCHANGEABLE
Indicator,sight,liquid
Clark-Reliance Llc Dba Jacoby-Tarbox
6680-01-186-0368F2045-SGI-I-M-GWT-PA INTERCHANGEABLE
Indicator,sight,liquid
American Society for Testing and Materials Dba Astm International
6680-01-186-0369EEP54-ASX-15IN-TY-1-CL-A INTERCHANGEABLE
Indicator,sight,liquid
Ernst Flow Industries Llc Div Ernst Flow Industries
6680-01-194-2549EEP53A-FLG-15-375IN-TY 1-CL A INTERCHANGEABLE
Indicator,sight,liquid
Ernst Flow Industries Llc Div Ernst Flow Industries
6680-01-417-3494EEP54AFLG-TY2CLA 28.75IN CTR INTERCHANGEABLE
Indicator,sight,liquid
Ernst Flow Industries Llc Div Ernst Flow Industries
Cross-Reference Index
Part NumberManufacturer
SGIDIRMG/T Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
MIL-I-20037 Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M
Related Parts
6680-00-290-7299INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-00-290-7300INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-00-290-7302INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-00-290-7304INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-01-115-6125INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-01-133-6735INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
2448-012
6680-01-186-0368INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
F2045-SGI-I-M-GWT-PA
6680-01-186-0369INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
EEP54-ASX-15IN-TY-1-CL-A
6680-01-194-2549INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
EEP53A-FLG-15-375IN-TY 1-CL A
6680-01-417-3494INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
EEP54AFLG-TY2CLA 28.75IN CTR
6680-01-446-4645INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID
6680-01-498-1501INTERCHANGEABLE
INDICATOR,SIGHT,LIQUID

Frequently Asked Questions

What is NSN 6680-00-290-7301?

NSN 6680-00-290-7301 is a Indicator,sight,liquid, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-00-290-7301?

NSN 6680-00-290-7301 has 2 cross-referenced part numbers: SGIDIRMG/T (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), MIL-I-20037 (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M).

What NSN replaces 6680-00-290-7301?

There are 12 known substitutes for 6680-00-290-7301: 6680-00-290-7299, 6680-00-290-7300, 6680-00-290-7302 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SGIDIRMG/T?

Key specifications for SGIDIRMG/T: End Connection Type: UNABLE TO DECODE; Nominal Pipe Size for Which Designed: UNABLE TO DECODE; Nominal Thread Size: UNABLE TO DECODE; Thread Series Designator: UNABLE TO DECODE. 20 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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