PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

20982Seat,helical Compression Spring

Hydro-Aire Aerospace Corp · NSN 5340-00-345-4637 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-00-345-4637 — this item is cataloged by the U.S. Government under National Stock Number 5340-00-345-4637. Primary manufacturer part number: 20982.
Features
  • Seat,helical Compression Spring — FSC 5340
  • 1 verified cross-reference
  • Primary manufacturer: Hydro-Aire Aerospace Corp
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-00-345-4637, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Hydro-Aire Aerospace Corp. This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Catalog Facts
Item NameSeat,helical Compression Spring
FSC / FSG5340 — No Item Name Available (FSG 53)
ManufacturersHydro-Aire Aerospace Corp (CAGE 81982)
Technical Specifications
ParameterValue
NSN5340-00-345-4637
Primary Part Number20982
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerHydro-Aire Aerospace Corp
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
5310-00-298-6364 INTERCHANGEABLE
Washer,flat
5320-00-544-2910 INTERCHANGEABLE
Rivet,starter
5910-00-825-0403913-3794-000 INTERCHANGEABLE
Capacitor,fixed,ceramic Dielectr
Rockwell Collins, Inc. Dba Collins Aerospace Government Systems Div Collins Aerospace - Government Systems
2520-01-039-1818 INTERCHANGEABLE
Link,differential Lock
4720-01-332-612820982 INTERCHANGEABLE
Hose,preformed
Gates Corporation
Cross-Reference Index
Part NumberManufacturer
20982 PRIMARY Hydro-Aire Aerospace Corp (USA)
Related Parts
5310-00-298-6364INTERCHANGEABLE
WASHER,FLAT
5320-00-544-2910INTERCHANGEABLE
RIVET,STARTER
5910-00-825-0403INTERCHANGEABLE
CAPACITOR,FIXED,CERAMIC DIELECTR
913-3794-000
2520-01-039-1818INTERCHANGEABLE
LINK,DIFFERENTIAL LOCK
4720-01-332-6128INTERCHANGEABLE
HOSE,PREFORMED
20982

Frequently Asked Questions

What is NSN 5340-00-345-4637?

NSN 5340-00-345-4637 is a Seat,helical Compression Spring, manufactured by Hydro-Aire Aerospace Corp, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-00-345-4637?

NSN 5340-00-345-4637 has 1 cross-referenced part number: 20982 (Hydro-Aire Aerospace Corp).

What NSN replaces 5340-00-345-4637?

There are 5 known substitutes for 5340-00-345-4637: 5310-00-298-6364, 5320-00-544-2910, 5910-00-825-0403 and 2 more. Verify interchangeability with system specifications before substitution.

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