PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

229-716-42Seat,valve

Leslie Controls, Inc. Dba Leslie Controls Inc · NSN 4820-00-521-9760 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-521-9760 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-521-9760. Primary manufacturer part number: 229-716-42.
Features
  • Seat,valve — FSC 4820
  • Thread Series Designator: UNS SINGLE THREADED PORTION
  • Style Designator: FAUCET
  • Body Inside Diameter: 2.594 INCHES NOMINAL IN
  • Seating Surface Shape: FLAT
  • Nominal Thread Size: 2.938 INCHES SINGLE THREADED PORTION IN
  • Material: NICKEL ALLOY OVERALL
  • Flange Seat to Disk End Height: 0.375 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-521-9760, 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 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 10 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN4820-00-521-9760
Primary Part Number229-716-42
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLeslie Controls, Inc. Dba Leslie Controls Inc
StatusCANCELLED
Thread Series DesignatorUNS SINGLE THREADED PORTION
Style DesignatorFAUCET
Body Inside Diameter2.594 INCHES NOMINAL IN
Seating Surface ShapeFLAT
Nominal Thread Size2.938 INCHES SINGLE THREADED PORTION IN
MaterialNICKEL ALLOY OVERALL
Flange Seat to Disk End Height0.375 INCHES NOMINAL IN
Flange Diameter3.156 INCHES NOMINAL IN
Thread Class2A SINGLE THREADED PORTION A
Thread Quantity Per Inch14 SINGLE THREADED PORTION
Under Flange Height0.375 INCHES NOMINAL IN
Thread Length0.375 INCHES NOMINAL SINGLE THREADED PORTION IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 2
5310-00-880-8189 INTERCHANGEABLE
Nut,plain,hexagon
5340-01-227-08078107-N-0440-0 INTERCHANGEABLE
Standoff,threaded,spacing
Carey Manufacturing Co, Inc Dba Amatom Electronic Hardware Div Amatom Electronic Hardware
Cross-Reference Index
Part NumberManufacturer
N-733 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
229-716-42 Heligear Canada Acquisitioncorporationdba Northstar Aerospace Inc (milton) (CAN)
355047PC6 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
B22971A-42 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N-733 PC 15 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N-677-15 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
229-716-42 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N407 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
N407-13 Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
NB22971642 PRIMARY Leslie Controls, Inc. Dba Leslie Controls Inc (USA)
Related Parts
5310-00-880-8189INTERCHANGEABLE
NUT,PLAIN,HEXAGON
5340-01-227-0807INTERCHANGEABLE
STANDOFF,THREADED,SPACING
8107-N-0440-0

Frequently Asked Questions

What is NSN 4820-00-521-9760?

NSN 4820-00-521-9760 is a Seat,valve, manufactured by Leslie Controls, Inc. Dba Leslie Controls Inc, classified under FSC 4820 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 4820-00-521-9760?

NSN 4820-00-521-9760 has 10 cross-referenced part numbers: N-733 (Leslie Controls, Inc. Dba Leslie Controls Inc), 229-716-42 (Heligear Canada Acquisitioncorporationdba Northstar Aerospace Inc (milton)), 355047PC6 (Leslie Controls, Inc. Dba Leslie Controls Inc), B22971A-42 (Leslie Controls, Inc. Dba Leslie Controls Inc), N-733 PC 15 (Leslie Controls, Inc. Dba Leslie Controls Inc) and 5 more.

What NSN replaces 4820-00-521-9760?

There are 2 known substitutes for 4820-00-521-9760: 5310-00-880-8189, 5340-01-227-0807. Verify interchangeability with system specifications before substitution.

What are the specifications of 229-716-42?

Key specifications for 229-716-42: Thread Series Designator: UNS SINGLE THREADED PORTION; Style Designator: FAUCET; Body Inside Diameter: 2.594 INCHES NOMINAL IN; Seating Surface Shape: FLAT. 12 total characteristics are documented in the Federal Logistics Information System.

Is NSN 4820-00-521-9760 still in active supply?

NSN 4820-00-521-9760 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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