PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

NB31956772Diaphragm,valve,flat

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-260-8416 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-260-8416 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-260-8416. Primary manufacturer part number: NB31956772.
Features
  • Diaphragm,valve,flat — FSC 4820
  • Material Thickness: 0.062 INCHES NOMINAL IN
  • Temp Rating: 140.0 FAHRENHEIT NOMINAL DEGF
  • Outside Diameter: 3.790 INCHES NOMINAL IN
  • Center Hole Diameter: 0.438 INCHES NOMINAL IN
  • Media for Which Designed: WATER
  • Material: RUBBER
  • Bolt Circle Diameter: 3.125 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Rubber construction
General Description

The Diaphragm,valve,flat, cataloged under National Stock Number 4820-01-260-8416, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Leslie Controls, Inc. Dba Leslie Controls Inc. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 1 manufacturer, 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
NSN4820-01-260-8416
Primary Part NumberNB31956772
Item NameDiaphragm,valve,flat
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusCANCELLED
Material Thickness0.062 INCHES NOMINAL IN
Temp Rating140.0 FAHRENHEIT NOMINAL DEGF
Outside Diameter3.790 INCHES NOMINAL IN
Center Hole Diameter0.438 INCHES NOMINAL IN
Media for Which DesignedWATER
MaterialRUBBER
Bolt Circle Diameter3.125 INCHES NOMINAL IN
Hole Diameter0.270 INCHES NOMINAL IN
Style DesignatorFLAT
Bolt Hole Quantity8
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 5
5360-00-291-1203A1254 INTERCHANGEABLE
Spring,helical,compression
Anderson Greenwood Lp Dba Anderson Greenwood Crosby
4820-01-194-0175YB2312C222 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-268-151212278-72 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-357-874130-1/2IN 90T150PSI INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-01-398-2065N-524 X N-618 1/2 10 T 26 PSI INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
N-524 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
31956772 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
30A C3535 .75IN IT 7 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
NB31956772 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
19567-72 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N-524-7 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5360-00-291-1203INTERCHANGEABLE
SPRING,HELICAL,COMPRESSION
A1254
4820-01-194-0175INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
YB2312C222
4820-01-268-1512INTERCHANGEABLE
DISK,VALVE
12278-72
4820-01-357-8741INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
30-1/2IN 90T150PSI
4820-01-398-2065INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
N-524 X N-618 1/2 10 T 26 PSI

Frequently Asked Questions

What is NSN 4820-01-260-8416?

NSN 4820-01-260-8416 is a Diaphragm,valve,flat, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-01-260-8416?

NSN 4820-01-260-8416 has 6 cross-referenced part numbers: N-524 (Leslie Controls, Inc. Dba Leslie Controls Inc), 31956772 (Leslie Controls, Inc. Dba Leslie Controls Inc), 30A C3535 .75IN IT 7 (Leslie Controls, Inc. Dba Leslie Controls Inc), NB31956772 (Leslie Controls, Inc. Dba Leslie Controls Inc), 19567-72 (Leslie Controls, Inc. Dba Leslie Controls Inc) and 1 more.

What NSN replaces 4820-01-260-8416?

There are 5 known substitutes for 4820-01-260-8416: 5360-00-291-1203, 4820-01-194-0175, 4820-01-268-1512 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of NB31956772?

Key specifications for NB31956772: Material Thickness: 0.062 INCHES NOMINAL IN; Temp Rating: 140.0 FAHRENHEIT NOMINAL DEGF; Outside Diameter: 3.790 INCHES NOMINAL IN; Center Hole Diameter: 0.438 INCHES NOMINAL IN. 10 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-01-260-8416 still in active supply?

NSN 4820-01-260-8416 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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