PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21661Seat,helical Compression Spring

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5340-01-330-5602 · FSC 5340 · No Item Name Available
Verified by PartsTable
NSN 5340-01-330-5602 — this item is cataloged by the U.S. Government under National Stock Number 5340-01-330-5602. Primary manufacturer part number: 21661.
Features
  • Seat,helical Compression Spring — FSC 5340
  • 2 verified cross-references
  • Primary manufacturer: Parker Hannifin Corporation Div Hydraulic Systems Division
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Seat,helical Compression Spring, cataloged under National Stock Number 5340-01-330-5602, is classified within Federal Supply Class 5340 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active. Unit of issue: EA.

Catalog Facts
Item NameSeat,helical Compression Spring
FSC / FSG5340 — No Item Name Available (FSG 53)
ManufacturersAbex Corp Aerospace Div Oxnard Ca (CAGE 75250); Parker Hannifin Corporation Div Hydraulic Systems Division (CAGE 93835)
Successor NSN6130-00-092-5625 — Power Supply
Technical Specifications
ParameterValue
NSN5340-01-330-5602
Primary Part Number21661
Item NameSeat,helical Compression Spring
FSC / FSG5340 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Unit of IssueEA
Verified Substitutes 10
Power Supply
4320-00-163-107199121661 INTERCHANGEABLE
Pump,rotary
Alfa Laval Inc
4720-00-447-353821661 INTERCHANGEABLE
Hose Assembly,nonmetallic
Dressta North America Ltd
6610-00-544-555121661 INTERCHANGEABLE
Cover,plug
Undersea Sensor Systems Inc Div Ultra Sonobuoy Systems
5999-00-920-3734 INTERCHANGEABLE
Mounting Pad,electrical-Electron
1440-00-956-53802166-1 INTERCHANGEABLE
Cable Drum Assembly
Nammo Defense Systems Inc. Dba Nammo Defense Systems Inc
5330-01-117-408021661 INTERCHANGEABLE
Gasket
Forenta Lp
5305-01-188-049021661 INTERCHANGEABLE
Screw,assy. Vent
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
5360-01-196-401821661 INTERCHANGEABLE
Spring,helical,extension
Barnes Group Inc. Dba Barnes Distribution
6625-01-434-688221661 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
21661 Abex Corp Aerospace Div Oxnard Ca
21661 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
6130-00-092-5625SUCCESSOR
POWER SUPPLY
4320-00-163-1071INTERCHANGEABLE
PUMP,ROTARY
99121661
4720-00-447-3538INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
21661
6610-00-544-5551INTERCHANGEABLE
COVER,PLUG
21661
5999-00-920-3734INTERCHANGEABLE
MOUNTING PAD,ELECTRICAL-ELECTRON
1440-00-956-5380INTERCHANGEABLE
CABLE DRUM ASSEMBLY
2166-1
5330-01-117-4080INTERCHANGEABLE
GASKET
21661
5305-01-188-0490INTERCHANGEABLE
SCREW,ASSY. VENT
21661
5360-01-196-4018INTERCHANGEABLE
SPRING,HELICAL,EXTENSION
21661
6625-01-434-6882INTERCHANGEABLE
AMMETER
21661

Frequently Asked Questions

What is NSN 5340-01-330-5602?

NSN 5340-01-330-5602 is a Seat,helical Compression Spring, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5340 (No Item Name Available). Status: active.

What are the part numbers for NSN 5340-01-330-5602?

NSN 5340-01-330-5602 has 2 cross-referenced part numbers: 21661 (Abex Corp Aerospace Div Oxnard Ca), 21661 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5340-01-330-5602?

There are 10 known substitutes for 5340-01-330-5602: 6130-00-092-5625, 4320-00-163-1071, 4720-00-447-3538 and 7 more. Verify interchangeability with system specifications before substitution.

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