PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N12353Seat,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-036-1544 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1544 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1544. Primary manufacturer part number: N12353.
Features
  • Seat,valve — FSC 4820
  • Thread Length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
  • Material: PLASTIC POLYAMIDE NYLON OVERALL
  • Flange Diameter: 0.570 INCHES NOMINAL IN
  • Thread Class: 2A SINGLE THREADED PORTION A
  • Thread Series Designator: UNF SINGLE THREADED PORTION
  • Seating Surface Shape: FLAT
  • Body Inside Diameter: 0.090 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Plastic Polyamide Nylon Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-036-1544, 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 11 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-036-1544
Primary Part NumberN12353
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Thread Length0.250 INCHES NOMINAL SINGLE THREADED PORTION IN
MaterialPLASTIC POLYAMIDE NYLON OVERALL
Flange Diameter0.570 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Thread Series DesignatorUNF SINGLE THREADED PORTION
Seating Surface ShapeFLAT
Body Inside Diameter0.090 INCHES NOMINAL IN
Under Flange Height0.250 INCHES NOMINAL IN
Nominal Thread Size0.438 INCHES SINGLE THREADED PORTION IN
Flange Seat to Disk End Height0.170 INCHES NOMINAL IN
Style DesignatorTHREADED FLANGED
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5330-00-135-363412353 INTERCHANGEABLE
Gasket
Aerosonic Llc
5330-00-163-877012353 INTERCHANGEABLE
Retainer,seal
Dressta North America Ltd
5133-00-232-6399 INTERCHANGEABLE
Drill,twist
4730-00-277-5543 INTERCHANGEABLE
Elbow,pipe
4820-00-336-9269N12358 INTERCHANGEABLE
Seat,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5935-00-549-286212353 INTERCHANGEABLE
Connector,receptacle,electrical
Raytheon Company Dba Raytheon Co
3010-00-998-7337 INTERCHANGEABLE
Gearcase-Motor
3120-01-130-1019 INTERCHANGEABLE
Bearing,sleeve
4820-01-138-7335 INTERCHANGEABLE
Seat,valve
2520-01-163-499912340073-1 INTERCHANGEABLE
Transfer Transmission Assembly
U S Army Tank Automotive Command Amsta-Im-Mm
Cross-Reference Index
Part NumberManufacturer
12353 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
12353 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
N12353 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5330-00-135-3634INTERCHANGEABLE
GASKET
12353
5330-00-163-8770INTERCHANGEABLE
RETAINER,SEAL
12353
5133-00-232-6399INTERCHANGEABLE
DRILL,TWIST
4730-00-277-5543INTERCHANGEABLE
ELBOW,PIPE
4820-00-336-9269INTERCHANGEABLE
SEAT,VALVE
N12358
5935-00-549-2862INTERCHANGEABLE
CONNECTOR,RECEPTACLE,ELECTRICAL
12353
3010-00-998-7337INTERCHANGEABLE
GEARCASE-MOTOR
3120-01-130-1019INTERCHANGEABLE
BEARING,SLEEVE
4820-01-138-7335INTERCHANGEABLE
SEAT,VALVE
2520-01-163-4999INTERCHANGEABLE
TRANSFER TRANSMISSION ASSEMBLY
12340073-1
5950-01-307-7134INTERCHANGEABLE
TRANSFORMER,POWER
14749
4330-01-349-7923INTERCHANGEABLE
PNEUMATIC MUFFLER,EXHAUST-INTAKE
12353

Frequently Asked Questions

What is NSN 4820-00-036-1544?

NSN 4820-00-036-1544 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 4820-00-036-1544?

NSN 4820-00-036-1544 has 3 cross-referenced part numbers: 12353 (Leslie Controls, Inc. Dba Leslie Controls Inc), 12353 (Lineta Engineering Und Handelsgesell-Schaft Mbh), N12353 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-00-036-1544?

There are 12 known substitutes for 4820-00-036-1544: 5330-00-135-3634, 5330-00-163-8770, 5133-00-232-6399 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N12353?

Key specifications for N12353: Thread Length: 0.250 INCHES NOMINAL SINGLE THREADED PORTION IN; Material: PLASTIC POLYAMIDE NYLON OVERALL; Flange Diameter: 0.570 INCHES NOMINAL IN; Special Features: TOP SLOTTED. 12 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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