PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

516623Simulator,a,is

Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp · NSN 4920-00-756-4278 · FSC 4920 · No Item Name Available
Verified by PartsTable
NSN 4920-00-756-4278 — this item is cataloged by the U.S. Government under National Stock Number 4920-00-756-4278. Primary manufacturer part number: 516623.
Features
  • Simulator,a,is — FSC 4920
  • 2 verified cross-references
  • Primary manufacturer: Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
Applications
  • Maintenance depot operations
  • Field repair and servicing
  • Vehicle maintenance facilities
General Description

The Simulator,a,is, cataloged under National Stock Number 4920-00-756-4278, is classified within Federal Supply Class 4920 (No Item Name Available) of the Maintenance and Repair Shop Equipment group. The primary manufacturer of record is Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSimulator,a,is
FSC / FSG4920 — No Item Name Available (FSG 49)
ManufacturersNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (CAGE 06481); Litton Systems Inc. Div Navigation Systems Division (CAGE 13973)
Technical Specifications
ParameterValue
NSN4920-00-756-4278
Primary Part Number516623
Item NameSimulator,a,is
FSC / FSG4920 / 49 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
4820-00-810-0988 INTERCHANGEABLE
Valve,check
Cross-Reference Index
Part NumberManufacturer
516623 Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp (USA)
516623 Litton Systems Inc. Div Navigation Systems Division (USA)
Related Parts
4820-00-810-0988INTERCHANGEABLE
VALVE,CHECK

Frequently Asked Questions

What is NSN 4920-00-756-4278?

NSN 4920-00-756-4278 is a Simulator,a,is, manufactured by Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp, classified under FSC 4920 (No Item Name Available). Status: active.

What are the part numbers for NSN 4920-00-756-4278?

NSN 4920-00-756-4278 has 2 cross-referenced part numbers: 516623 (Northrop Grumman Systems Corporation Dba Northrop Grumman Systems Corp), 516623 (Litton Systems Inc. Div Navigation Systems Division).

What NSN replaces 4920-00-756-4278?

There is 1 known substitute for 4920-00-756-4278: 4820-00-810-0988. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com