PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A7519Diaphragm,valve,flat

Mueller Brass Co. · NSN 4820-00-126-8545 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-126-8545 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-126-8545. Primary manufacturer part number: A7519.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Outside Diameter: 1.250 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING
  • Style Designator: FLAT
  • Material Thickness: 0.005 INCHES NOMINAL IN
  • 1 verified cross-reference
  • Primary manufacturer: Mueller Brass Co.
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-00-126-8545, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Mueller Brass Co.. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-126-8545
Primary Part NumberA7519
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerMueller Brass Co.
StatusACTIVE
Outside Diameter1.250 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING
Style DesignatorFLAT
Material Thickness0.005 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-921-3763SMC542092 INTERCHANGEABLE
Coil,radio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
Cross-Reference Index
Part NumberManufacturer
A7519 PRIMARY Mueller Brass Co. (USA)
Related Parts
5950-00-921-3763INTERCHANGEABLE
COIL,RADIO FREQUENCY
SMC542092

Frequently Asked Questions

What is NSN 4820-00-126-8545?

NSN 4820-00-126-8545 is a Diaphragm,valve,flat, manufactured by Mueller Brass Co., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-126-8545?

NSN 4820-00-126-8545 has 1 cross-referenced part number: A7519 (Mueller Brass Co.).

What NSN replaces 4820-00-126-8545?

There is 1 known substitute for 4820-00-126-8545: 5950-00-921-3763. Verify interchangeability with system specifications before substitution.

What are the specifications of A7519?

Key specifications for A7519: Outside Diameter: 1.250 INCHES NOMINAL IN; Material: STEEL CORROSION RESISTING; Style Designator: FLAT; Material Thickness: 0.005 INCHES NOMINAL IN. 4 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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