PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

21661Spring,helical,extension

Barnes Group Inc. Dba Barnes Distribution · NSN 5360-01-196-4018 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-01-196-4018 — this item is cataloged by the U.S. Government under National Stock Number 5360-01-196-4018. Primary manufacturer part number: 21661.
Features
  • Spring,helical,extension — FSC 5360
  • Design Type: CLOSED
  • End Style: SHORT TWISTED HOOK BOTH ENDS
  • Spring Free Length: 4.626 INCHES NOMINAL IN
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Spring Free Outside Diameter: 0.484 INCHES NOMINAL IN
  • Style Designator: CYLINDRICAL
  • Material: STEEL OVERALL
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-01-196-4018, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Barnes Group Inc. Dba Barnes Distribution. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-01-196-4018
Primary Part Number21661
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerBarnes Group Inc. Dba Barnes Distribution
StatusACTIVE
Design TypeCLOSED
End StyleSHORT TWISTED HOOK BOTH ENDS
Spring Free Length4.626 INCHES NOMINAL IN
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Free Outside Diameter0.484 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
MaterialSTEEL OVERALL
Hook Radius0.179 INCHES NOMINAL BOTH ENDS IN
Inside Diameter0.358 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 10
6130-00-092-5625 INTERCHANGEABLE
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
5340-01-330-560221661 INTERCHANGEABLE
Seat,helical Compression Spring
Parker Hannifin Corporation Div Hydraulic Systems Division
6625-01-434-688221661 INTERCHANGEABLE
Ammeter
Simpson Electric Company, Inc.
Cross-Reference Index
Part NumberManufacturer
21661 PRIMARY Barnes Group Inc. Dba Barnes Distribution (USA)
Related Parts
6130-00-092-5625INTERCHANGEABLE
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
5340-01-330-5602INTERCHANGEABLE
SEAT,HELICAL COMPRESSION SPRING
21661
6625-01-434-6882INTERCHANGEABLE
AMMETER
21661

Frequently Asked Questions

What is NSN 5360-01-196-4018?

NSN 5360-01-196-4018 is a Spring,helical,extension, manufactured by Barnes Group Inc. Dba Barnes Distribution, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-01-196-4018?

NSN 5360-01-196-4018 has 1 cross-referenced part number: 21661 (Barnes Group Inc. Dba Barnes Distribution).

What NSN replaces 5360-01-196-4018?

There are 10 known substitutes for 5360-01-196-4018: 6130-00-092-5625, 4320-00-163-1071, 4720-00-447-3538 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 21661?

Key specifications for 21661: Design Type: CLOSED; End Style: SHORT TWISTED HOOK BOTH ENDS; Spring Free Length: 4.626 INCHES NOMINAL IN; Coil Helix Direction: RIGHT-HAND OR LEFT-HAND. 9 total characteristics are documented in the Federal Logistics Information System.

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