PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N59921Piston,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-036-1517 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-036-1517 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-036-1517. Primary manufacturer part number: N59921.
Features
  • Piston,valve — FSC 4820
  • Valve Design Control Activity: 35795
  • Outside Diameter: 1.992 INCHES NOMINAL IN
  • Valve Size for Which Designed: 1.250 INCHES IN
  • Features Provided: SLOTTED AND THREADED
  • Valve Type for Which Designed: PRESSURE REDUCING
  • Valve Model Number for Which Designed: CLASS LNS-5
  • Material: STEEL
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Piston,valve, cataloged under National Stock Number 4820-00-036-1517, 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 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 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
NSN4820-00-036-1517
Primary Part NumberN59921
Item NamePiston,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Valve Design Control Activity35795
Outside Diameter1.992 INCHES NOMINAL IN
Valve Size for Which Designed1.250 INCHES IN
Features ProvidedSLOTTED AND THREADED
Valve Type for Which DesignedPRESSURE REDUCING
Valve Model Number for Which DesignedCLASS LNS-5
MaterialSTEEL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-036-1516N10686 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1523N10737 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1552N09442 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-036-1634N09439 INTERCHANGEABLE
Piston,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5310-00-053-780882218 INTERCHANGEABLE
Nut,self-Locking,single Ball Sea
Hayes Wheels Intl Inc Akron Opns
5365-00-135-703259921 INTERCHANGEABLE
Plug,machine Thread
Parker Hannifin Corporation Div Hydraulic Systems Division
4820-00-217-2772N11124 INTERCHANGEABLE
Disk,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
3120-00-287-9068 INTERCHANGEABLE
Bearing,sleeve
5905-00-302-4233 INTERCHANGEABLE
Resistor,fixed,film
4310-00-306-1319N11122 INTERCHANGEABLE
Cylinder Sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
Cross-Reference Index
Part NumberManufacturer
10705 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N59921 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17389N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
59921 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
59921 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
Related Parts
4820-00-036-1516INTERCHANGEABLE
PISTON,VALVE
N10686
4820-00-036-1523INTERCHANGEABLE
PISTON,VALVE
N10737
4820-00-036-1552INTERCHANGEABLE
PISTON,VALVE
N09442
4820-00-036-1634INTERCHANGEABLE
PISTON,VALVE
N09439
5310-00-053-7808INTERCHANGEABLE
NUT,SELF-LOCKING,SINGLE BALL SEA
82218
5365-00-135-7032INTERCHANGEABLE
PLUG,MACHINE THREAD
59921
4820-00-217-2772INTERCHANGEABLE
DISK,VALVE
N11124
3120-00-287-9068INTERCHANGEABLE
BEARING,SLEEVE
5905-00-302-4233INTERCHANGEABLE
RESISTOR,FIXED,FILM
4310-00-306-1319INTERCHANGEABLE
CYLINDER SLEEVE
N11122
5330-00-310-2095INTERCHANGEABLE
SEAL RING,METAL
10705
4820-00-403-5640INTERCHANGEABLE
DISK,VALVE
N11190

Frequently Asked Questions

What is NSN 4820-00-036-1517?

NSN 4820-00-036-1517 is a Piston,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 4820-00-036-1517?

NSN 4820-00-036-1517 has 5 cross-referenced part numbers: 10705 (Leslie Controls, Inc. Dba Leslie Controls Inc), N59921 (Leslie Controls, Inc. Dba Leslie Controls Inc), 17389N (Leslie Controls, Inc. Dba Leslie Controls Inc), 59921 (Leslie Controls, Inc. Dba Leslie Controls Inc), 59921 (Lineta Engineering Und Handelsgesell-Schaft Mbh).

What NSN replaces 4820-00-036-1517?

There are 12 known substitutes for 4820-00-036-1517: 4820-00-036-1516, 4820-00-036-1523, 4820-00-036-1552 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N59921?

Key specifications for N59921: Valve Design Control Activity: 35795; Outside Diameter: 1.992 INCHES NOMINAL IN; Overall Length: 1.750 INCHES NOMINAL IN; Valve Size for Which Designed: 1.250 INCHES IN. 8 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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