PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-156-5Seat,valve

Parker Hannifin Corporation Div Aerospace Group Headquarters · NSN 4820-00-863-6740 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-00-863-6740 — this item is cataloged by the U.S. Government under National Stock Number 4820-00-863-6740. Primary manufacturer part number: 4-156-5.
Features
  • Seat,valve — FSC 4820
  • Material: ALUMINUM ALLOY OVERALL
  • Surface Treatment: ANODIZE OVERALL
  • 1 verified cross-reference
  • Primary manufacturer: Parker Hannifin Corporation Div Aerospace Group Headquarters
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-00-863-6740, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Parker Hannifin Corporation Div Aerospace Group Headquarters. Government technical data includes 2 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. 6 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN4820-00-863-6740
Primary Part Number4-156-5
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Aerospace Group Headquarters
StatusACTIVE
MaterialALUMINUM ALLOY OVERALL
Surface TreatmentANODIZE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5305-00-354-20462BL01216 INTERCHANGEABLE
Setscrew
Volvo Trucks North America, Inc. Dba (foreign Parent Is Volvo Lastvagnar Ab, Goteborg, Sweden.)
6930-00-394-024641565 INTERCHANGEABLE
Drum Assembly,numbe
Instruments and Flight Research, Inc.
5950-00-578-8558SMD346444 INTERCHANGEABLE
Transformer,discriminator
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
5120-00-937-9732 INTERCHANGEABLE
Tang Breakoff Tool,screw Thread
5998-01-162-5698 INTERCHANGEABLE
Extender Card,electronic Test
5962-01-203-727341565 INTERCHANGEABLE
Microcircuit,memory
Raytheon Company Div Rmd Strategic
Cross-Reference Index
Part NumberManufacturer
4-156-5 PRIMARY Parker Hannifin Corporation Div Aerospace Group Headquarters (USA)
Related Parts
5305-00-354-2046INTERCHANGEABLE
SETSCREW
2BL01216
6930-00-394-0246INTERCHANGEABLE
DRUM ASSEMBLY,NUMBE
41565
5950-00-578-8558INTERCHANGEABLE
TRANSFORMER,DISCRIMINATOR
SMD346444
5120-00-937-9732INTERCHANGEABLE
TANG BREAKOFF TOOL,SCREW THREAD
5998-01-162-5698INTERCHANGEABLE
EXTENDER CARD,ELECTRONIC TEST
5962-01-203-7273INTERCHANGEABLE
MICROCIRCUIT,MEMORY
41565

Frequently Asked Questions

What is NSN 4820-00-863-6740?

NSN 4820-00-863-6740 is a Seat,valve, manufactured by Parker Hannifin Corporation Div Aerospace Group Headquarters, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-00-863-6740?

NSN 4820-00-863-6740 has 1 cross-referenced part number: 4-156-5 (Parker Hannifin Corporation Div Aerospace Group Headquarters).

What NSN replaces 4820-00-863-6740?

There are 6 known substitutes for 4820-00-863-6740: 5305-00-354-2046, 6930-00-394-0246, 5950-00-578-8558 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-156-5?

Key specifications for 4-156-5: Material: ALUMINUM ALLOY OVERALL; Surface Treatment: ANODIZE OVERALL. 2 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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