PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FLUIDMASTER F400AValve,float,water Closet Tank

A-1 Industrial Supply · NSN 4510-00-541-7539 · FSC 4510 · No Item Name Available
Verified by PartsTable
NSN 4510-00-541-7539 — this item is cataloged by the U.S. Government under National Stock Number 4510-00-541-7539. Primary manufacturer part number: FLUIDMASTER F400A.
Features
  • Valve,float,water Closet Tank — FSC 4510
  • Material: STEEL CORROSION RESISTING STEM
  • Material: STEEL CORROSION RESISTING BODY
  • Flow Control Device: ANY ACCEPTABLE
  • Body Style: FLOAT VALVE W/RENEWABLE SEAT AND REFILL TUBE
  • Inlet Location: BOTTOM
  • Furnished Items: FLOAT ROD AND REFILL TUBE
  • Media for Which Designed: WATER, FRESH
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Stem construction
General Description

The Valve,float,water Closet Tank, cataloged under National Stock Number 4510-00-541-7539, is classified within Federal Supply Class 4510 (No Item Name Available) of the Plumbing, Heating, and Waste Disposal group. The primary manufacturer of record is A-1 Industrial Supply. Government technical data includes 8 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4510-00-541-7539
Primary Part NumberFLUIDMASTER F400A
Item NameValve,float,water Closet Tank
FSC / FSG4510 / 45 — No Item Name Available
ManufacturerA-1 Industrial Supply
StatusCANCELLED
MaterialSTEEL CORROSION RESISTING STEM
MaterialSTEEL CORROSION RESISTING BODY
Flow Control DeviceANY ACCEPTABLE
Body StyleFLOAT VALVE W/RENEWABLE SEAT AND REFILL TUBE
Inlet LocationBOTTOM
Furnished ItemsFLOAT ROD AND REFILL TUBE
Media for Which DesignedWATER, FRESH
SubmersibilitySUBMERSIBLE
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
4510-00-190-33552754K3 INTERCHANGEABLE
Rod,tank Float,water Closet
Mcmaster-Carr Supply Co
Cross-Reference Index
Part NumberManufacturer
4510-00-541-7539 General Services Administration Federal Supply Service (USA)
WW-V-001915 Federal Specifications Promulgated by General Services Administration Washington DC (USA)
A-A-248 Federal Commercial Item Description Promulgated by General Services Administration Washington DC (USA)
FLUIDMASTER F400A PRIMARY A-1 Industrial Supply (USA)
Related Parts
4510-00-190-3355INTERCHANGEABLE
ROD,TANK FLOAT,WATER CLOSET
2754K3

Frequently Asked Questions

What is NSN 4510-00-541-7539?

NSN 4510-00-541-7539 is a Valve,float,water Closet Tank, manufactured by A-1 Industrial Supply, classified under FSC 4510 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4510-00-541-7539?

NSN 4510-00-541-7539 has 4 cross-referenced part numbers: 4510-00-541-7539 (General Services Administration Federal Supply Service), WW-V-001915 (Federal Specifications Promulgated by General Services Administration Washington DC), A-A-248 (Federal Commercial Item Description Promulgated by General Services Administration Washington DC), FLUIDMASTER F400A (A-1 Industrial Supply).

What NSN replaces 4510-00-541-7539?

There is 1 known substitute for 4510-00-541-7539: 4510-00-190-3355. Verify interchangeability with system specifications before substitution.

What are the specifications of FLUIDMASTER F400A?

Key specifications for FLUIDMASTER F400A: Material: STEEL CORROSION RESISTING STEM; Material: STEEL CORROSION RESISTING BODY; Flow Control Device: ANY ACCEPTABLE; Body Style: FLOAT VALVE W/RENEWABLE SEAT AND REFILL TUBE. 8 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4510-00-541-7539 still in active supply?

NSN 4510-00-541-7539 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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