PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

9912Seat,valve

Northrop Grumman Systems Corporation Div Marine Systems · NSN 4810-00-175-8830 · FSC 4810 · No Item Name Available
Verified by PartsTable
NSN 4810-00-175-8830 — this item is cataloged by the U.S. Government under National Stock Number 4810-00-175-8830. Primary manufacturer part number: 9912.
Features
  • Seat,valve — FSC 4810
  • Style Designator: THREADED FLANGED
  • Material: STEEL CORROSION RESISTING OVERALL
  • Body Inside Diameter: 0.687 INCHES NOMINAL IN
  • Under Flange Height: 0.562 INCHES NOMINAL IN
  • Flange Seat to Disk End Height: 0.375 INCHES NOMINAL IN
  • 18 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Div Marine Systems
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Applications requiring Steel Corrosion Resisting Overall construction
General Description

The Seat,valve, cataloged under National Stock Number 4810-00-175-8830, is classified within Federal Supply Class 4810 (No Item Name Available) of the Valves group. The primary manufacturer of record is Northrop Grumman Systems Corporation Div Marine Systems. Government technical data includes 5 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 18 commercial cross-references from 3 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
NSN4810-00-175-8830
Primary Part Number9912
Item NameSeat,valve
FSC / FSG4810 / 48 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Div Marine Systems
StatusACTIVE
Style DesignatorTHREADED FLANGED
MaterialSTEEL CORROSION RESISTING OVERALL
Body Inside Diameter0.687 INCHES NOMINAL IN
Under Flange Height0.562 INCHES NOMINAL IN
Flange Seat to Disk End Height0.375 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 6
5120-00-056-39435120-00-056-3943 INTERCHANGEABLE
Blade,nutdriver
General Services Administration Federal Supply Service
5330-00-250-5753 INTERCHANGEABLE
Seal,plain Encased
6625-00-389-4498M9720936 INTERCHANGEABLE
Meter
General Electric Company
5306-00-638-7810J8912 INTERCHANGEABLE
Bolt,machine
Joslyn Corp
6625-00-762-0361 INTERCHANGEABLE
Test Set,electrical Meter
5120-01-602-8329 INTERCHANGEABLE
Wrench,box and Open End,combinat
Cross-Reference Index
Part NumberManufacturer
D15-308EPC88 Westinghouse Electric Corp (USA)
D15-308IPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-308JPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-394JPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-394EPC88 Westinghouse Electric Corp (USA)
D15-394JPC88 Westinghouse Electric Corp (USA)
D15-308EPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-308BPC88 Westinghouse Electric Corp (USA)
D15-394IPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-394IPC88 Westinghouse Electric Corp (USA)
9912 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-394BPC88 Westinghouse Electric Corp (USA)
D15-308JPC88 Westinghouse Electric Corp (USA)
D15-394BPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
9912 Westinghouse Electric Corp Sturtevant Div (USA)
D15-394EPC88 PRIMARY Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-308BPC88 Northrop Grumman Systems Corporation Div Marine Systems (USA)
D15-308IPC88 Westinghouse Electric Corp (USA)
Related Parts
5120-00-056-3943INTERCHANGEABLE
BLADE,NUTDRIVER
5120-00-056-3943
5330-00-250-5753INTERCHANGEABLE
SEAL,PLAIN ENCASED
6625-00-389-4498INTERCHANGEABLE
METER
M9720936
5306-00-638-7810INTERCHANGEABLE
BOLT,MACHINE
J8912
6625-00-762-0361INTERCHANGEABLE
TEST SET,ELECTRICAL METER
5120-01-602-8329INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT

Frequently Asked Questions

What is NSN 4810-00-175-8830?

NSN 4810-00-175-8830 is a Seat,valve, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 4810 (No Item Name Available). Status: active.

What are the part numbers for NSN 4810-00-175-8830?

NSN 4810-00-175-8830 has 18 cross-referenced part numbers: D15-308EPC88 (Westinghouse Electric Corp), D15-308IPC88 (Northrop Grumman Systems Corporation Div Marine Systems), D15-308JPC88 (Northrop Grumman Systems Corporation Div Marine Systems), D15-394JPC88 (Northrop Grumman Systems Corporation Div Marine Systems), D15-394EPC88 (Westinghouse Electric Corp) and 13 more.

What NSN replaces 4810-00-175-8830?

There are 6 known substitutes for 4810-00-175-8830: 5120-00-056-3943, 5330-00-250-5753, 6625-00-389-4498 and 3 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 9912?

Key specifications for 9912: Style Designator: THREADED FLANGED; Material: STEEL CORROSION RESISTING OVERALL; Body Inside Diameter: 0.687 INCHES NOMINAL IN; Under Flange Height: 0.562 INCHES NOMINAL IN. 5 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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