PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N09544Seat,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-036-1577 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1577 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1577. Primary manufacturer part number: N09544.
Features
  • Seat,valve — FSC 4820
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Thread Quantity Per Inch: 16 SINGLE THREADED PORTION
  • Body Inside Diameter: 1.188 INCHES NOMINAL IN
  • Under Flange Height: 0.438 INCHES NOMINAL IN
  • Flange Diameter: 1.875 INCHES NOMINAL IN
  • Seating Surface Shape: ANGULAR
  • Flange Seat to Disk End Height: 0.250 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-036-1577, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-036-1577
Primary Part NumberN09544
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Thread Class2A SINGLE THREADED PORTION A
Thread Quantity Per Inch16 SINGLE THREADED PORTION
Body Inside Diameter1.188 INCHES NOMINAL IN
Under Flange Height0.438 INCHES NOMINAL IN
Flange Diameter1.875 INCHES NOMINAL IN
Seating Surface ShapeANGULAR
Flange Seat to Disk End Height0.250 INCHES NOMINAL IN
Thread Series DesignatorUN SINGLE THREADED PORTION
Style DesignatorTHREADED FLANGED
MaterialSTEEL OVERALL
Thread Length0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
Seat Angle in Deg15.000 NOMINAL
Nominal Thread Size1.625 INCHES SINGLE THREADED PORTION IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 7
6625-00-028-3967 INTERCHANGEABLE
Voltmeter
5905-00-232-18271960928-1 INTERCHANGEABLE
Resistor,variable,wire Wound,pre
Honeywell Intl Inc Defense Avionics Systems
5970-00-284-87739544 INTERCHANGEABLE
Insulator,feedthru
Halsit Holdings Llc Div Halsit Holdings, Llc Dba Abbatron
6105-00-912-5858 INTERCHANGEABLE
Parts Kit,electric Motor
4820-00-923-4711 INTERCHANGEABLE
Disk,valve
6145-01-252-72999886 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
6145-01-377-33679544 INTERCHANGEABLE
Cable,special Purpose,electrical
Belden Wire & Cable Company Llc Dba Belden Cdt Electronics Division
Cross-Reference Index
Part NumberManufacturer
9544 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
9544 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
N09544 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
6625-00-028-3967INTERCHANGEABLE
VOLTMETER
5905-00-232-1827INTERCHANGEABLE
RESISTOR,VARIABLE,WIRE WOUND,PRE
1960928-1
5970-00-284-8773INTERCHANGEABLE
INSULATOR,FEEDTHRU
9544
6105-00-912-5858INTERCHANGEABLE
PARTS KIT,ELECTRIC MOTOR
4820-00-923-4711INTERCHANGEABLE
DISK,VALVE
6145-01-252-7299INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
9886
6145-01-377-3367INTERCHANGEABLE
CABLE,SPECIAL PURPOSE,ELECTRICAL
9544

Frequently Asked Questions

What is NSN 4820-00-036-1577?

NSN 4820-00-036-1577 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-036-1577?

NSN 4820-00-036-1577 has 3 cross-referenced part numbers: 9544 (Leslie Controls, Inc. Dba Leslie Controls Inc), 9544 (Lineta Engineering Und Handelsgesell-Schaft Mbh), N09544 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-00-036-1577?

There are 7 known substitutes for 4820-00-036-1577: 6625-00-028-3967, 5905-00-232-1827, 5970-00-284-8773 and 4 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N09544?

Key specifications for N09544: Thread Class: 2A SINGLE THREADED PORTION A; Thread Quantity Per Inch: 16 SINGLE THREADED PORTION; Body Inside Diameter: 1.188 INCHES NOMINAL IN; Under Flange Height: 0.438 INCHES NOMINAL IN. 14 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com