PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

4-81035-1Spring,helical,extension

The Boeing Company Div Defense · NSN 5360-00-327-0441 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-327-0441 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-327-0441. Primary manufacturer part number: 4-81035-1.
Features
  • Spring,helical,extension — FSC 5360
  • Coil to Hook Inside Length: 0.517 INCHES NOMINAL BOTH ENDS IN
  • Coil Quantity: 17-1/2
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
  • Material: STEEL OVERALL
  • Style Designator: CYLINDRICAL W/ CONVEX ENDS
  • Spring Free Length: 3.726 INCHES NOMINAL IN
  • Hook Radius: 0.180 INCHES NOMINAL BOTH ENDS IN
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 5360-00-327-0441, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The Boeing Company Div Defense. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-327-0441
Primary Part Number4-81035-1
Item NameSpring,helical,extension
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerThe Boeing Company Div Defense
StatusACTIVE
Coil to Hook Inside Length0.517 INCHES NOMINAL BOTH ENDS IN
Coil Quantity17-1/2
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
MaterialSTEEL OVERALL
Style DesignatorCYLINDRICAL W/ CONVEX ENDS
Spring Free Length3.726 INCHES NOMINAL IN
Hook Radius0.180 INCHES NOMINAL BOTH ENDS IN
Spring Length Under Load3.550 INCHES MINIMUM AND 4.950 INCHES MAXIMUM IN
Load Rating17.90 POUNDS MINIMUM AND 88.00 POUNDS MAXIMUM LBS
Spring Deflection Rate50.440 POUNDS PER INCH NOMINAL LBS
End StyleEYE LOOP BOTH ENDS
Design TypeOPEN
Spring Free Outside Diameter1.060 INCHES NOMINAL IN
Material Document and ClassificationMIL-W-6101 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
5950-00-481-9296481035-1 INTERCHANGEABLE
Reactor
Raytheon Company Dba Raytheon Co
Cross-Reference Index
Part NumberManufacturer
4-81035-1 Connecticut Spring & Stamping Corporation the Dba Connecticut Spring & Stamping Corp (USA)
4-81035-1 PRIMARY The Boeing Company Div Defense (USA)
Related Parts
5950-00-481-9296INTERCHANGEABLE
REACTOR
481035-1

Frequently Asked Questions

What is NSN 5360-00-327-0441?

NSN 5360-00-327-0441 is a Spring,helical,extension, manufactured by The Boeing Company Div Defense, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-327-0441?

NSN 5360-00-327-0441 has 2 cross-referenced part numbers: 4-81035-1 (Connecticut Spring & Stamping Corporation the Dba Connecticut Spring & Stamping Corp), 4-81035-1 (The Boeing Company Div Defense).

What NSN replaces 5360-00-327-0441?

There is 1 known substitute for 5360-00-327-0441: 5950-00-481-9296. Verify interchangeability with system specifications before substitution.

What are the specifications of 4-81035-1?

Key specifications for 4-81035-1: Coil to Hook Inside Length: 0.517 INCHES NOMINAL BOTH ENDS IN; Coil Quantity: 17-1/2; End Item Identification: B52 ACFT; Coil Helix Direction: RIGHT-HAND OR LEFT-HAND. 15 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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