$5.33
Storing and returning force, this spring holds a part under tension or compression so it seats, returns, or holds position the way the mechanism requires, whether it returns a lever, keeps a component loaded, or absorbs movement. The spring's rate and dimensions set the force it delivers, and when it weakens, sags, or breaks, the part it controls no longer returns or holds as designed.
A spring does its work by storing force and giving it back, holding a component under compression or tension so it seats, returns, or stays loaded exactly the way the mechanism was designed to hold it. Its rate and dimensions set how much force it delivers, so the wire diameter, free length, and coil count are what make one spring right for a given position and another wrong.
In service a spring can weaken, take a set, sag, or fracture. When it does, the part it controls stops returning fully or holding position, which shows up as slow, loose, or incomplete action in the mechanism it drives. Replacing it restores the designed force at that point.
Match the wire diameter, free length, outside diameter, and coil count to the spring being replaced, since spring force depends directly on those dimensions and a substitute has to reproduce them to behave the same way under load.
