PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

N37821Cap,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-01-436-4251 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-436-4251 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-436-4251. Primary manufacturer part number: N37821.
Features
  • Cap,valve — FSC 4820
  • 4 verified cross-references
  • Primary manufacturer: Leslie Controls, Inc. Dba Leslie Controls Inc
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
General Description

The Cap,valve, cataloged under National Stock Number 4820-01-436-4251, 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. This item has 4 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameCap,valve
FSC / FSG4820 — No Item Name Available (FSG 48)
ManufacturersLeslie Controls, Inc. Dba Leslie Controls Inc (CAGE 35795)
Technical Specifications
ParameterValue
NSN4820-01-436-4251
Primary Part NumberN37821
Item NameCap,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5110-00-239-32705110-00-239-3270 INTERCHANGEABLE
File,hand
General Services Administration Federal Supply Service
5306-00-823-585837821 INTERCHANGEABLE
Bolt,externally Relieved Body
L3harris Technologies, Inc. Div Space and Airborne Systems
4810-01-484-144538161 INTERCHANGEABLE
Cap,valve
Leslie Controls, Inc. Dba Leslie Controls Inc
5340-01-564-15273782-1 INTERCHANGEABLE
Strap,retaining
Carlisle & Finch Co
Cross-Reference Index
Part NumberManufacturer
18356N PC 12B Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
37821 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
18356N Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N37821 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5110-00-239-3270INTERCHANGEABLE
FILE,HAND
5110-00-239-3270
5306-00-823-5858INTERCHANGEABLE
BOLT,EXTERNALLY RELIEVED BODY
37821
4810-01-484-1445INTERCHANGEABLE
CAP,VALVE
38161
5340-01-564-1527INTERCHANGEABLE
STRAP,RETAINING
3782-1

Frequently Asked Questions

What is NSN 4820-01-436-4251?

NSN 4820-01-436-4251 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 4820-01-436-4251?

NSN 4820-01-436-4251 has 4 cross-referenced part numbers: 18356N PC 12B (Leslie Controls, Inc. Dba Leslie Controls Inc), 37821 (Leslie Controls, Inc. Dba Leslie Controls Inc), 18356N (Leslie Controls, Inc. Dba Leslie Controls Inc), N37821 (Leslie Controls, Inc. Dba Leslie Controls Inc).

What NSN replaces 4820-01-436-4251?

There are 4 known substitutes for 4820-01-436-4251: 5110-00-239-3270, 5306-00-823-5858, 4810-01-484-1445 and 1 more. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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