PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

90594Piston Assy,cylinde

Northrop Grumman Systems Corporation · NSN 1620-00-474-1975 · FSC 1620 · No Item Name Available
Verified by PartsTable
NSN 1620-00-474-1975 — this item is cataloged by the U.S. Government under National Stock Number 1620-00-474-1975. Primary manufacturer part number: 90594.
Features
  • Piston Assy,cylinde — FSC 1620
  • 1 verified cross-reference
  • Primary manufacturer: Northrop Grumman Systems Corporation
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Piston Assy,cylinde, cataloged under National Stock Number 1620-00-474-1975, is classified within Federal Supply Class 1620 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Northrop Grumman Systems Corporation. This item has 1 commercial cross-reference from 1 manufacturer, 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 NamePiston Assy,cylinde
FSC / FSG1620 — No Item Name Available (FSG 16)
ManufacturersNorthrop Grumman Systems Corporation (CAGE 26512)
Technical Specifications
ParameterValue
NSN1620-00-474-1975
Primary Part Number90594
Item NamePiston Assy,cylinde
FSC / FSG1620 / 16 — No Item Name Available
ManufacturerNorthrop Grumman Systems Corporation
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
6625-00-512-12441162967 INTERCHANGEABLE
Voltmeter
Westinghouse Electric Corp
Cross-Reference Index
Part NumberManufacturer
90594 PRIMARY Northrop Grumman Systems Corporation (USA)
Related Parts
6625-00-512-1244INTERCHANGEABLE
VOLTMETER
1162967

Frequently Asked Questions

What is NSN 1620-00-474-1975?

NSN 1620-00-474-1975 is a Piston Assy,cylinde, manufactured by Northrop Grumman Systems Corporation, classified under FSC 1620 (No Item Name Available). Status: active.

What are the part numbers for NSN 1620-00-474-1975?

NSN 1620-00-474-1975 has 1 cross-referenced part number: 90594 (Northrop Grumman Systems Corporation).

What NSN replaces 1620-00-474-1975?

There is 1 known substitute for 1620-00-474-1975: 6625-00-512-1244. Verify interchangeability with system specifications before substitution.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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