PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

17221Spring,helical,extension

Fl Aerospace Corp Janitrol Aero Div/general Design · NSN 5360-00-290-3940 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-290-3940 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-290-3940. Primary manufacturer part number: 17221.
Features
  • Spring,helical,extension — FSC 5360
  • Inside Diameter: 0.147 INCHES NOMINAL IN
  • Opening Width: 0.016 INCHES NOMINAL BOTH ENDS IN
  • Coil Helix Direction: LEFT-HAND
  • Coil Quantity: 10
  • Material Document and Classification: QQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Load Rating: 0.180 POUNDS NOMINAL LBS
  • Spring Free Outside Diameter: 0.175 INCHES NOMINAL IN
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
General Description

The Spring,helical,extension, cataloged under National Stock Number 5360-00-290-3940, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fl Aerospace Corp Janitrol Aero Div/general Design. Government technical data includes 14 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-290-3940
Primary Part Number17221
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerFl Aerospace Corp Janitrol Aero Div/general Design
StatusACTIVE
Inside Diameter0.147 INCHES NOMINAL IN
Opening Width0.016 INCHES NOMINAL BOTH ENDS IN
Coil Helix DirectionLEFT-HAND
Coil Quantity10
Material Document and ClassificationQQ-W-470 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Load Rating0.180 POUNDS NOMINAL LBS
Spring Free Outside Diameter0.175 INCHES NOMINAL IN
End StyleMACHINED HALF LOOP BOTH ENDS
Spring Free Length0.3292 INCHES NOMINAL IN
Hook Radius0.0781 INCHES NOMINAL BOTH ENDS IN
Spring Length Under Load0.434 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
Design TypeCLOSED
Surface TreatmentOXIDE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
3040-00-163-106999132860 INTERCHANGEABLE
Lever,manual Control
Alfa Laval Inc
2530-00-213-748117221 INTERCHANGEABLE
Knuckle,steering
Dana Corp Spicer Transmission Div
5950-00-271-1828989110-22B INTERCHANGEABLE
Coil,radio Frequency
Raytheon Company Dba Raytheon
3110-00-293-9092172-21 INTERCHANGEABLE
Bearing,ball,annular
Ontic Engineering & Manufacturing, Inc Dba Ontic Us
5340-00-734-7754 INTERCHANGEABLE
Clip,rod Retainer
5950-00-848-63211676763 INTERCHANGEABLE
Transformer,power
Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier
5315-01-486-061017221 INTERCHANGEABLE
Pin,spring
Singer Industrial Sewing Products Co
2540-01-518-510717221 INTERCHANGEABLE
Latch,hood,vehicular
Brunswick Corp Dba Mercury Marine Div Mercury Marine
5306-01-557-050912759-00621 INTERCHANGEABLE
Bolt,machine
Fastenal Company Dba Fastenal Co
Cross-Reference Index
Part NumberManufacturer
17221 Fl Aerospace Corp Janitrol Aero Div/general Design (USA)
Related Parts
3040-00-163-1069INTERCHANGEABLE
LEVER,MANUAL CONTROL
99132860
2530-00-213-7481INTERCHANGEABLE
KNUCKLE,STEERING
17221
5950-00-271-1828INTERCHANGEABLE
COIL,RADIO FREQUENCY
989110-22B
3110-00-293-9092INTERCHANGEABLE
BEARING,BALL,ANNULAR
172-21
5340-00-734-7754INTERCHANGEABLE
CLIP,ROD RETAINER
5950-00-848-6321INTERCHANGEABLE
TRANSFORMER,POWER
1676763
5315-01-486-0610INTERCHANGEABLE
PIN,SPRING
17221
2540-01-518-5107INTERCHANGEABLE
LATCH,HOOD,VEHICULAR
17221
5306-01-557-0509INTERCHANGEABLE
BOLT,MACHINE
12759-00621

Frequently Asked Questions

What is NSN 5360-00-290-3940?

NSN 5360-00-290-3940 is a Spring,helical,extension, manufactured by Fl Aerospace Corp Janitrol Aero Div/general Design, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-290-3940?

NSN 5360-00-290-3940 has 1 cross-referenced part number: 17221 (Fl Aerospace Corp Janitrol Aero Div/general Design).

What NSN replaces 5360-00-290-3940?

There are 9 known substitutes for 5360-00-290-3940: 3040-00-163-1069, 2530-00-213-7481, 5950-00-271-1828 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 17221?

Key specifications for 17221: Inside Diameter: 0.147 INCHES NOMINAL IN; Opening Width: 0.016 INCHES NOMINAL BOTH ENDS IN; Coil Helix Direction: LEFT-HAND; Coil Quantity: 10. 14 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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