PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

181791Transmitter,liquid Quantity

Setra Systems, Inc. Dba Gems Sensors · NSN 6680-01-491-3571 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-01-491-3571 — this item is cataloged by the U.S. Government under National Stock Number 6680-01-491-3571. Primary manufacturer part number: 181791.
Features
  • Transmitter,liquid Quantity — FSC 6680
  • Float Effective Travel: 31.312 INCHES NOMINAL IN
  • Pressure Rating: 0.000 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 100.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
  • Current Type: DC
  • Mounting Method: BRACKET(S)
  • Resistance in Ohms: 6200.000 PER INCH OF INDICATION
  • Voltage Rating: 10.0 VOLTS MINIMUM AND 12.0 VOLTS MAXIMUM
  • Media for Which Designed: WATER
Applications
  • Applications requiring Rubber Butadiene-Acrylonitrile Class Nbr Float construction
General Description

The Transmitter,liquid Quantity, cataloged under National Stock Number 6680-01-491-3571, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Setra Systems, Inc. Dba Gems Sensors. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN6680-01-491-3571
Primary Part Number181791
Item NameTransmitter,liquid Quantity
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerSetra Systems, Inc. Dba Gems Sensors
StatusACTIVE
Float Effective Travel31.312 INCHES NOMINAL IN
Pressure Rating0.000 POUNDS PER SQUARE INCH (PSI) MINIMUM AND 100.000 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
Current TypeDC
Mounting MethodBRACKET(S)
Resistance in Ohms6200.000 PER INCH OF INDICATION
Voltage Rating10.0 VOLTS MINIMUM AND 12.0 VOLTS MAXIMUM
Media for Which DesignedWATER
Actuation MethodFLOAT
MaterialRUBBER BUTADIENE-ACRYLONITRILE CLASS NBR FLOAT
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
1650-00-831-039018179-1 INTERCHANGEABLE
Transducer Assembly
Cadillac Gage Textron Inc.
6680-01-443-3815164537 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
6680-01-483-3416XM-79665-048-01000-I-HP-316 INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
6680-01-491-3553XM-79665-92-6200-W-H INTERCHANGEABLE
Transmitter,liquid Quantity
Setra Systems, Inc. Dba Gems Sensors
5895-01-655-5970123791 INTERCHANGEABLE
Transmitter Subassembly
Setra Systems, Inc. Dba Gems Sensors
5895-01-655-6370123587 INTERCHANGEABLE
Transmitter Subassembly
Setra Systems, Inc. Dba Gems Sensors
Cross-Reference Index
Part NumberManufacturer
14809118 Naval Sea Systems Command (USA)
XM-79665-30-6200-W-L Setra Systems, Inc. Dba Gems Sensors (USA)
XM-79665 Setra Systems, Inc. Dba Gems Sensors (USA)
437-6404265-150 Naval Sea Systems Command (USA)
181791 PRIMARY Setra Systems, Inc. Dba Gems Sensors (USA)
Related Parts
1650-00-831-0390INTERCHANGEABLE
TRANSDUCER ASSEMBLY
18179-1
6680-01-443-3815INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
164537
6680-01-483-3416INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
XM-79665-048-01000-I-HP-316
6680-01-491-3553INTERCHANGEABLE
TRANSMITTER,LIQUID QUANTITY
XM-79665-92-6200-W-H
5895-01-655-5970INTERCHANGEABLE
TRANSMITTER SUBASSEMBLY
123791
5895-01-655-6370INTERCHANGEABLE
TRANSMITTER SUBASSEMBLY
123587

Frequently Asked Questions

What is NSN 6680-01-491-3571?

NSN 6680-01-491-3571 is a Transmitter,liquid Quantity, manufactured by Setra Systems, Inc. Dba Gems Sensors, classified under FSC 6680 (No Item Name Available). Status: active.

What are the part numbers for NSN 6680-01-491-3571?

NSN 6680-01-491-3571 has 5 cross-referenced part numbers: 14809118 (Naval Sea Systems Command), XM-79665-30-6200-W-L (Setra Systems, Inc. Dba Gems Sensors), XM-79665 (Setra Systems, Inc. Dba Gems Sensors), 437-6404265-150 (Naval Sea Systems Command), 181791 (Setra Systems, Inc. Dba Gems Sensors).

What NSN replaces 6680-01-491-3571?

There are 6 known substitutes for 6680-01-491-3571: 1650-00-831-0390, 6680-01-443-3815, 6680-01-483-3416 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 181791?

Key specifications for 181791: Float Effective Travel: 31.312 INCHES NOMINAL IN; End Item Identification: TANK LEVEL INDICATOR SYSTEM, SEAWOLF CLASS SSN; Special Features: TYPE: TRANSFER; STAINLESS STEEL MAT., EPOXY COATED; 30 IN. OF INDICATION, 2 4 PIN CONNECTORS; CABLE OUTPUT IN; Overall Length: 44.250 INCHES NOMINAL IN. 12 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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