The S4628-1598 is an aircraft-grade helical compression spring used in aviation mechanical assemblies such as landing gear mechanisms, control linkages, latching systems, or actuator subcomponents. It is a standardized aerospace hardware item identified by an S-prefix part number, commonly found in aircraft Illustrated Parts Catalogs (IPC) and NSN cross-reference systems.

This part belongs to a broader S4628-series family of aircraft components where each suffix defines specific spring geometry (wire diameter, free length, load rating, and material properties). The “1598” variant corresponds to a specific load/deflection configuration used in certified aircraft assemblies.

Key features include:

Aircraft-grade helical compression spring
S4628-series aviation hardware designation
Precision wound steel construction
Designed for cyclic loading and vibration environments
Used in landing gear, actuation, or mechanical retention systems
Controlled tolerance manufacturing for aerospace reliability
Corrosion-resistant spring steel (spec varies by build standard)
Identified in NSN/IPC aviation supply systems
Suitable for high-cycle fatigue applications
Installed in certified maintenance and overhaul procedures