PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

56443Spring,helical,compression

Parker Hannifin Corporation Div Hydraulic Systems Division · NSN 5360-00-073-8178 · FSC 5360 · No Item Name Available
Verified by PartsTable
NSN 5360-00-073-8178 — this item is cataloged by the U.S. Government under National Stock Number 5360-00-073-8178. Primary manufacturer part number: 56443.
Features
  • Spring,helical,compression — FSC 5360
  • Inside Diameter: 0.355 INCHES NOMINAL IN
  • Spring Free Length: 1.596 INCHES NOMINAL IN
  • Spring Free Outside Diameter: 0.515 INCHES NOMINAL IN
  • Material: STEEL OVERALL
  • Material Document and Classification: QQ-W-412 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Spring Deflection Rate: 73.000 POUNDS PER INCH NOMINAL LBS
  • Coil Helix Direction: RIGHT-HAND OR LEFT-HAND
Applications
  • Mechanical energy storage
  • Vibration dampening
  • Return mechanism operation
  • Applications requiring Steel Overall construction
General Description

The Spring,helical,compression, cataloged under National Stock Number 5360-00-073-8178, is classified within Federal Supply Class 5360 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Parker Hannifin Corporation Div Hydraulic Systems Division. Government technical data includes 12 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. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN5360-00-073-8178
Primary Part Number56443
Item NameSpring,helical,compression
FSC / FSG5360 / 53 — No Item Name Available
ManufacturerParker Hannifin Corporation Div Hydraulic Systems Division
StatusACTIVE
Inside Diameter0.355 INCHES NOMINAL IN
Spring Free Length1.596 INCHES NOMINAL IN
Spring Free Outside Diameter0.515 INCHES NOMINAL IN
MaterialSTEEL OVERALL
Material Document and ClassificationQQ-W-412 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
Spring Deflection Rate73.000 POUNDS PER INCH NOMINAL LBS
Coil Helix DirectionRIGHT-HAND OR LEFT-HAND
Spring Solid Length0.920 INCHES NOMINAL IN
Coil Quantity11-1/2
Bore Diameter0.530 INCHES NOMINAL IN
Style DesignatorCYLINDRICAL
End StyleSPRING END,SQUARED AND GROUND BOTH ENDS
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 2
5306-00-550-0485NAS564-43 INTERCHANGEABLE
Bolt,machine
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
5995-01-584-522856443-1 INTERCHANGEABLE
Cable Assembly,special Purpose,e
Naval Air Warfare Ctr Aircraft Div
Cross-Reference Index
Part NumberManufacturer
56443 PRIMARY Parker Hannifin Corporation Div Hydraulic Systems Division (USA)
Related Parts
5306-00-550-0485INTERCHANGEABLE
BOLT,MACHINE
NAS564-43
5995-01-584-5228INTERCHANGEABLE
CABLE ASSEMBLY,SPECIAL PURPOSE,E
56443-1

Frequently Asked Questions

What is NSN 5360-00-073-8178?

NSN 5360-00-073-8178 is a Spring,helical,compression, manufactured by Parker Hannifin Corporation Div Hydraulic Systems Division, classified under FSC 5360 (No Item Name Available). Status: active.

What are the part numbers for NSN 5360-00-073-8178?

NSN 5360-00-073-8178 has 1 cross-referenced part number: 56443 (Parker Hannifin Corporation Div Hydraulic Systems Division).

What NSN replaces 5360-00-073-8178?

There are 2 known substitutes for 5360-00-073-8178: 5306-00-550-0485, 5995-01-584-5228. Verify interchangeability with system specifications before substitution.

What are the specifications of 56443?

Key specifications for 56443: Inside Diameter: 0.355 INCHES NOMINAL IN; Spring Free Length: 1.596 INCHES NOMINAL IN; Spring Free Outside Diameter: 0.515 INCHES NOMINAL IN; Material: STEEL OVERALL. 12 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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