PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12430Seat,valve

Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems · NSN 4820-01-197-2883 · FSC 4820 · No Item Name Available
Verified by PartsTable
NSN 4820-01-197-2883 — this item is cataloged by the U.S. Government under National Stock Number 4820-01-197-2883. Primary manufacturer part number: 12430.
Features
  • Seat,valve — FSC 4820
  • Material Document and Classification: QQ-A-225/8 FED SPEC ALL MATERIAL RESPONSES OVERALL
  • Material: ALUMINUM ALLOY 6061 OVERALL
  • Style Designator: FAUCET
  • Flange Seat to Disk End Height: 0.650 INCHES NOMINAL IN
  • Under Flange Height: 0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
  • Body Inside Diameter: 0.337 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
  • Flange Diameter: 0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Aluminum Alloy 6061 Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4820-01-197-2883, is classified within Federal Supply Class 4820 (No Item Name Available) of the Valves group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems. Government technical data includes 7 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, 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
NSN4820-01-197-2883
Primary Part Number12430
Item NameSeat,valve
FSC / FSG4820 / 48 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems
StatusACTIVE
Material Document and ClassificationQQ-A-225/8 FED SPEC ALL MATERIAL RESPONSES OVERALL
MaterialALUMINUM ALLOY 6061 OVERALL
Style DesignatorFAUCET
Flange Seat to Disk End Height0.650 INCHES NOMINAL IN
Under Flange Height0.433 INCHES MINIMUM AND 0.443 INCHES MAXIMUM IN
Body Inside Diameter0.337 INCHES MINIMUM AND 0.338 INCHES MAXIMUM IN
Flange Diameter0.495 INCHES MINIMUM AND 0.505 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5999-00-061-756210-40450-24S INTERCHANGEABLE
Shielding Gasket,electronic
Amphenol Corp Div Amphenol Aerospace Operations
5340-00-392-6954 INTERCHANGEABLE
Holder,roller
3110-00-958-6025HM801310ANDHM801349 INTERCHANGEABLE
Bearing,roller,tapered
The Timken Corporation
5930-01-266-757412430 INTERCHANGEABLE
Switch,slide
Giga-Tronics Incorporated Dba Giga-Tronics
6640-01-421-551212430 INTERCHANGEABLE
Tank Assy,cleaner,u
L & R Manufacturing Company
8465-01-570-793012430 INTERCHANGEABLE
Mounting,ski
Silvretta North America
Cross-Reference Index
Part NumberManufacturer
10124680 Nimikkeistokeskus Ncb Finland (FIN)
12430 The Boeing Company Div Defense (USA)
12430 Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc. (USA)
12430 Howden Fluid Systems (USA)
12430 PRIMARY Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems (USA)
12430 Meggitt Defense Systems, Inc. Dba Meggitt Defense Systems Inc (USA)
Related Parts
5999-00-061-7562INTERCHANGEABLE
SHIELDING GASKET,ELECTRONIC
10-40450-24S
5340-00-392-6954INTERCHANGEABLE
HOLDER,ROLLER
3110-00-958-6025INTERCHANGEABLE
BEARING,ROLLER,TAPERED
HM801310ANDHM801349
5930-01-266-7574INTERCHANGEABLE
SWITCH,SLIDE
12430
6640-01-421-5512INTERCHANGEABLE
TANK ASSY,CLEANER,U
12430
8465-01-570-7930INTERCHANGEABLE
MOUNTING,SKI
12430

Frequently Asked Questions

What is NSN 4820-01-197-2883?

NSN 4820-01-197-2883 is a Seat,valve, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems, classified under FSC 4820 (No Item Name Available). Status: active.

What are the part numbers for NSN 4820-01-197-2883?

NSN 4820-01-197-2883 has 6 cross-referenced part numbers: 10124680 (Nimikkeistokeskus Ncb Finland), 12430 (The Boeing Company Div Defense), 12430 (Meggitt (north Hollywood), Inc. Dba Meggitt Control Systems Div Meggitt Defense Systems, Inc.), 12430 (Howden Fluid Systems), 12430 (Northrop Grumman Systems Corporation Dba Northrop Grumman Is Div Northrop Grumman Aeronautics Systems) and 1 more.

What NSN replaces 4820-01-197-2883?

There are 6 known substitutes for 4820-01-197-2883: 5999-00-061-7562, 5340-00-392-6954, 3110-00-958-6025 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12430?

Key specifications for 12430: Material Document and Classification: QQ-A-225/8 FED SPEC ALL MATERIAL RESPONSES OVERALL; Material: ALUMINUM ALLOY 6061 OVERALL; Style Designator: FAUCET; Flange Seat to Disk End Height: 0.650 INCHES NOMINAL IN. 8 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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