PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1587Disk,valve

Lawler Manufacturing Company, Inc. · NSN 4820-00-623-4117 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-623-4117 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-623-4117. Primary manufacturer part number: 1587.
Features
  • Disk,valve — FSC 4820
  • Under Flange Height: 0.487 INCHES NOMINAL IN
  • Tip Diameter: 0.365 INCHES NOMINAL IN
  • Shank Diameter: 0.365 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 2.625 INCHES MINIMUM AND 2.733 INCHES MAXIMUM IN
  • Style Designator: POPPET
  • Material: NICKEL ALLOY
  • Seat Angle: 45.0 DEGREES NOMINAL
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Nickel Alloy construction
General Description

The Disk,valve, cataloged under National Stock Number 4820-00-623-4117, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Lawler Manufacturing Company, Inc.. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, 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
NSN4820-00-623-4117
Primary Part Number1587
Item NameDisk,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerLawler Manufacturing Company, Inc.
StatusACTIVE
Under Flange Height0.487 INCHES NOMINAL IN
Tip Diameter0.365 INCHES NOMINAL IN
Shank Diameter0.365 INCHES NOMINAL IN
Flange Seat to Disk End Height2.625 INCHES MINIMUM AND 2.733 INCHES MAXIMUM IN
Style DesignatorPOPPET
MaterialNICKEL ALLOY
Seat Angle45.0 DEGREES NOMINAL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5305-00-143-0630 INTERCHANGEABLE
Screw,machine
5120-00-144-21005120-00-144-2100 INTERCHANGEABLE
Die,eyelet
General Services Administration Federal Supply Service
4310-00-264-30191587 INTERCHANGEABLE
Pin,piston
Quincy Compressor Division of Coltec Industries Inc Dba Quincy Compressor Div Quincy Compressor
5905-00-486-6134C600012810 INTERCHANGEABLE
Resistor Set,matched
Kearfott Corporation Div Guidance and Navigation Division
5915-00-593-8211956466 INTERCHANGEABLE
Filter,radio Frequency Interfere
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5950-00-646-2368 INTERCHANGEABLE
Reactor
5840-00-665-1737RT212TPS1D INTERCHANGEABLE
Receiver-Transmitter,radar
Joint Electronics Type Designation System
5855-01-074-33332079006-1 INTERCHANGEABLE
Pinch Off Tube Assembly
Raytheon Company Dba Raytheon
6760-01-098-298236-7000 INTERCHANGEABLE
Frame,blank
Davidson Optronics Inc. Dba Doi Venture
4330-01-133-78891587-016 INTERCHANGEABLE
Head,fluid Filter
Parker-Hannifin Corporation Dba Hydraulic Filter Division Div Hydraulic & Fuel Filter Division
Cross-Reference Index
Part NumberManufacturer
1587 PRIMARY Lawler Manufacturing Company, Inc. (USA)
Related Parts
5305-00-143-0630INTERCHANGEABLE
SCREW,MACHINE
5120-00-144-2100INTERCHANGEABLE
DIE,EYELET
5120-00-144-2100
4310-00-264-3019INTERCHANGEABLE
PIN,PISTON
1587
5905-00-486-6134INTERCHANGEABLE
RESISTOR SET,MATCHED
C600012810
5915-00-593-8211INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
956466
5950-00-646-2368INTERCHANGEABLE
REACTOR
5840-00-665-1737INTERCHANGEABLE
RECEIVER-TRANSMITTER,RADAR
RT212TPS1D
5855-01-074-3333INTERCHANGEABLE
PINCH OFF TUBE ASSEMBLY
2079006-1
6760-01-098-2982INTERCHANGEABLE
FRAME,BLANK
36-7000
4330-01-133-7889INTERCHANGEABLE
HEAD,FLUID FILTER
1587-016
6910-01-279-6920INTERCHANGEABLE
CHART SET,ANATOMICAL
5305-01-325-5767INTERCHANGEABLE
SCREW,CAP,SOCKET HEAD
1587

Frequently Asked Questions

What is NSN 4820-00-623-4117?

NSN 4820-00-623-4117 is a Disk,valve, manufactured by Lawler Manufacturing Company, Inc., classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-623-4117?

NSN 4820-00-623-4117 has 1 cross-referenced part number: 1587 (Lawler Manufacturing Company, Inc.).

What NSN replaces 4820-00-623-4117?

There are 12 known substitutes for 4820-00-623-4117: 5305-00-143-0630, 5120-00-144-2100, 4310-00-264-3019 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1587?

Key specifications for 1587: Under Flange Height: 0.487 INCHES NOMINAL IN; Overall Height: 3.220 INCHES NOMINAL IN; Tip Diameter: 0.365 INCHES NOMINAL IN; Shank Diameter: 0.365 INCHES NOMINAL IN. 9 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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