PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N521960057Cap,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-183-4736 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-183-4736 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-183-4736. Primary manufacturer part number: N521960057.
Features
  • Cap,valve — FSC 4820
  • Valve Model Number for Which Designed: CLASS LNS
  • Attachment Method: BOLTS
  • Material: STEEL
  • Valve Type for Which Designed: FLUID PRESSURE REGULATING
  • Valve Size for Which Designed: 2.000 INCHES IN
  • 6 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel construction
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-183-4736, 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 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 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
NSN4820-01-183-4736
Primary Part NumberN521960057
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Valve Model Number for Which DesignedCLASS LNS
Attachment MethodBOLTS
MaterialSTEEL
Valve Type for Which DesignedFLUID PRESSURE REGULATING
Valve Size for Which Designed2.000 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4820-00-046-4617 INTERCHANGEABLE
Valve,regulating,fluid Pressure
5940-00-159-021310-420-2 INTERCHANGEABLE
Terminal,stud
Concord Electronics, Inc.
4310-00-306-1319N11122 INTERCHANGEABLE
Cylinder Sleeve
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-433-5992 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-435-7991Y303700610 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-573-7612 INTERCHANGEABLE
Valve,regulating,fluid Pressure
1270-00-674-797252196 INTERCHANGEABLE
Journal,strip Actua
Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp Div Multiple
4820-00-862-4691 INTERCHANGEABLE
Valve,regulating,fluid Pressure
4820-00-873-8948Y303700910 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Leslie Controls, Inc. Dba Leslie Controls Inc
4820-00-935-5359 INTERCHANGEABLE
Valve,regulating,fluid Pressure
Cross-Reference Index
Part NumberManufacturer
17390N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
52196 Lineta Engineering Und Handelsgesell-Schaft Mbh (DEU)
52196 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N521960057 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
15782 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
17390NPIECE2C2IN Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
4820-00-046-4617INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
5940-00-159-0213INTERCHANGEABLE
TERMINAL,STUD
10-420-2
4310-00-306-1319INTERCHANGEABLE
CYLINDER SLEEVE
N11122
4820-00-433-5992INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-435-7991INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700610
4820-00-573-7612INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
1270-00-674-7972INTERCHANGEABLE
JOURNAL,STRIP ACTUA
52196
4820-00-862-4691INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
4820-00-873-8948INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
Y303700910
4820-00-935-5359INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE
5990-00-940-8528INTERCHANGEABLE
SYNCHRO,CONTROL TRANSFORMER
4820-00-943-4036INTERCHANGEABLE
VALVE,REGULATING,FLUID PRESSURE

Frequently Asked Questions

What is NSN 4820-01-183-4736?

NSN 4820-01-183-4736 is a Cap,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 4820-01-183-4736?

NSN 4820-01-183-4736 has 6 cross-referenced part numbers: 17390N (Leslie Controls, Inc. Dba Leslie Controls Inc), 52196 (Lineta Engineering Und Handelsgesell-Schaft Mbh), 52196 (Leslie Controls, Inc. Dba Leslie Controls Inc), N521960057 (Leslie Controls, Inc. Dba Leslie Controls Inc), 15782 (Leslie Controls, Inc. Dba Leslie Controls Inc) and 1 more.

What NSN replaces 4820-01-183-4736?

There are 12 known substitutes for 4820-01-183-4736: 4820-00-046-4617, 5940-00-159-0213, 4310-00-306-1319 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of N521960057?

Key specifications for N521960057: Valve Model Number for Which Designed: CLASS LNS; Attachment Method: BOLTS; Material: STEEL; Valve Type for Which Designed: FLUID PRESSURE REGULATING. 5 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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