PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

391ATransmitter,liquid Quantity

Stewart-Warner Corporation · NSN 6680-00-421-7404 · FSC 6680 · No Item Name Available
Verified by PartsTable
NSN 6680-00-421-7404 — this item is cataloged by the U.S. Government under National Stock Number 6680-00-421-7404. Primary manufacturer part number: 391A.
Features
  • Transmitter,liquid Quantity — FSC 6680
  • Media for Which Designed: INTERFACE
  • Mounting Method: FLANGE
  • Actuation Method: FLOAT
  • 4 verified cross-references
  • Primary manufacturer: Stewart-Warner Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Transmitter,liquid Quantity, cataloged under National Stock Number 6680-00-421-7404, is classified within Federal Supply Class 6680 (No Item Name Available) of the Instruments and Laboratory Equipment group. The primary manufacturer of record is Stewart-Warner Corporation. Government technical data includes 3 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN6680-00-421-7404
Primary Part Number391A
Item NameTransmitter,liquid Quantity
FSC / FSG6680 / 66 — No Item Name Available
ManufacturerStewart-Warner Corporation
StatusCANCELLED
Media for Which DesignedINTERFACE
Mounting MethodFLANGE
Actuation MethodFLOAT
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
6625-00-103-2679391A INTERCHANGEABLE
Test Set,semiconductor Device
L3harris Technologies, Inc. Dba Harris Corp Div Antenna Products
3835-00-223-9080 INTERCHANGEABLE
Shoe,well Pipe and Casing
5820-00-498-0730391A INTERCHANGEABLE
Panel
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5120-01-140-6343391A INTERCHANGEABLE
Multiplier,torque Wrench
Hydratight Operations Inc
4940-01-336-4805 INTERCHANGEABLE
Cleaning Gun,pneumatic
Cross-Reference Index
Part NumberManufacturer
D391A Stewart-Warner Corporation (USA)
391A PRIMARY Stewart-Warner Corporation (USA)
LL-2957-14 Pettibone/traverse Lift L.l.c. (USA)
E950131 Bros Inc
Related Parts
6625-00-103-2679INTERCHANGEABLE
TEST SET,SEMICONDUCTOR DEVICE
391A
3835-00-223-9080INTERCHANGEABLE
SHOE,WELL PIPE AND CASING
5820-00-498-0730INTERCHANGEABLE
PANEL
391A
5120-01-140-6343INTERCHANGEABLE
MULTIPLIER,TORQUE WRENCH
391A
4940-01-336-4805INTERCHANGEABLE
CLEANING GUN,PNEUMATIC

Frequently Asked Questions

What is NSN 6680-00-421-7404?

NSN 6680-00-421-7404 is a Transmitter,liquid Quantity, manufactured by Stewart-Warner Corporation, classified under FSC 6680 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 6680-00-421-7404?

NSN 6680-00-421-7404 has 4 cross-referenced part numbers: D391A (Stewart-Warner Corporation), 391A (Stewart-Warner Corporation), LL-2957-14 (Pettibone/traverse Lift L.l.c.), E950131 (Bros Inc).

What NSN replaces 6680-00-421-7404?

There are 5 known substitutes for 6680-00-421-7404: 6625-00-103-2679, 3835-00-223-9080, 5820-00-498-0730 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 391A?

Key specifications for 391A: Media for Which Designed: INTERFACE; Mounting Method: FLANGE; Actuation Method: FLOAT. 3 total characteristics are documented in the Federal Logistics Information System.

Is NSN 6680-00-421-7404 still in active supply?

NSN 6680-00-421-7404 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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