PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20489Retainer,seal,valve

Hamilton Sundstrand Corporation Dba Collins Aerospace · NSN 1660-00-916-3501 · FSC 1660 · No Item Name Available
Verified by PartsTable
NSN 1660-00-916-3501 — this item is cataloged by the U.S. Government under National Stock Number 1660-00-916-3501. Primary manufacturer part number: 20489.
Features
  • Retainer,seal,valve — FSC 1660
  • 2 verified cross-references
  • Primary manufacturer: Hamilton Sundstrand Corporation Dba Collins Aerospace
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Fluid containment and leak prevention
  • Pressure boundary maintenance
General Description

The Retainer,seal,valve, cataloged under National Stock Number 1660-00-916-3501, is classified within Federal Supply Class 1660 (No Item Name Available) of the Aircraft Components and Accessories group. The primary manufacturer of record is Hamilton Sundstrand Corporation Dba Collins Aerospace. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameRetainer,seal,valve
FSC / FSG1660 — No Item Name Available (FSG 16)
ManufacturersHamilton Sundstrand Corporation Dba Collins Aerospace (CAGE 73030); United Technologies Corp Hamilton Sundstrand Corp (CAGE 07148)
Technical Specifications
ParameterValue
NSN1660-00-916-3501
Primary Part Number20489
Item NameRetainer,seal,valve
FSC / FSG1660 / 16 — No Item Name Available
ManufacturerHamilton Sundstrand Corporation Dba Collins Aerospace
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 8
5331-00-078-8444 INTERCHANGEABLE
O-Ring
5342-00-182-981620489 INTERCHANGEABLE
Bracket
Vse Aviation, Inc.
5935-00-223-0572 INTERCHANGEABLE
Clamp,cable,electrical Connector
1730-00-800-105720489 INTERCHANGEABLE
Shaft and Seat Assy
Northrop Grumman Systems Corporation Dba Aerospace Systems Div Aeronautics Systems
5915-00-833-9025 INTERCHANGEABLE
Filter,radio Frequency Interfere
2915-00-846-628720489 INTERCHANGEABLE
Sleeve,shaft,valve
Eaton Corporation Dba Airframe Div Fuel & Motion Control Systems
3040-01-183-475920489 INTERCHANGEABLE
Piston,linear Actuating Cylinder
Leslie Controls, Inc. Dba Leslie Controls Inc
5340-01-502-391920489 INTERCHANGEABLE
Strap,webbing
Lift-All Company, Inc
Cross-Reference Index
Part NumberManufacturer
20489 PRIMARY Hamilton Sundstrand Corporation Dba Collins Aerospace (USA)
20489 United Technologies Corp Hamilton Sundstrand Corp (USA)
Related Parts
5331-00-078-8444INTERCHANGEABLE
O-RING
5342-00-182-9816INTERCHANGEABLE
BRACKET
20489
5935-00-223-0572INTERCHANGEABLE
CLAMP,CABLE,ELECTRICAL CONNECTOR
1730-00-800-1057INTERCHANGEABLE
SHAFT AND SEAT ASSY
20489
5915-00-833-9025INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
2915-00-846-6287INTERCHANGEABLE
SLEEVE,SHAFT,VALVE
20489
3040-01-183-4759INTERCHANGEABLE
PISTON,LINEAR ACTUATING CYLINDER
20489
5340-01-502-3919INTERCHANGEABLE
STRAP,WEBBING
20489

Frequently Asked Questions

What is NSN 1660-00-916-3501?

NSN 1660-00-916-3501 is a Retainer,seal,valve, manufactured by Hamilton Sundstrand Corporation Dba Collins Aerospace, classified under FSC 1660 (No Item Name Available). Status: active.

What are the part numbers for NSN 1660-00-916-3501?

NSN 1660-00-916-3501 has 2 cross-referenced part numbers: 20489 (Hamilton Sundstrand Corporation Dba Collins Aerospace), 20489 (United Technologies Corp Hamilton Sundstrand Corp).

What NSN replaces 1660-00-916-3501?

There are 8 known substitutes for 1660-00-916-3501: 5331-00-078-8444, 5342-00-182-9816, 5935-00-223-0572 and 5 more. Verify interchangeability with system specifications before substitution.

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