Where it earns its place
Best-Fit Uses
Retention tabs and clips
Holds a component against a surface while allowing controlled insertion or removal.
Contact and latch-return arms
Maintains pressure at a defined tip while fitting into a thin product envelope.
Providing spring action in a shallow product
A formed strip can flex from a fixed area to a working contact without the height of a separate coil spring.
Combining contact, retention and spring force
Useful when one stamped or formed part can both locate something and maintain pressure on it.
Why this style works here
What This Spring Style Solves
A cantilever flat spring can combine mounting, guiding and spring action in one thin part, which can simplify products that already have a planar support surface.
Before you choose it
What to Confirm in Your Assembly
- Provide fixed length, working length and the exact contact point.
- State free position, installed deflection, maximum deflection and whether the tip slides.
- Show the fixed region, working length and exact contact point.
- State free position, installed deflection and maximum deflection.
- Identify sliding contacts, electrical current or wear requirements if the spring also forms part of an interface.
Avoid forcing the wrong spring into the design
When Another Spring Style May Fit Better
Sharp bends, short flex lengths and mounting holes can concentrate strain even when the overall tip movement appears small. The intended flexible region should be clear in the drawing.
- Hairpin springs for open wire layouts
- Dedicated contact springs for electrical interfaces
- Compression springs when more height and separate assembly are acceptable
Keep material selection separate
Environment & Material Direction
Flat springs are often chosen together with conductive or corrosion-resistant alloys. Use the Materials section for that comparison after the working deflection and contact geometry are clear.
Move from the use case to the specification
Where to Go Next
Application questions
Frequently Asked Questions
Where should a cantilever flat spring be allowed to flex?
Preferably along a defined working length away from sharp attachment transitions. Show the fixed region and contact point so repeated movement is not forced into a tight bend.
Why are bend locations important in a flat spring?
Sharp bends and short flex lengths can concentrate strain near the mounting area. The part should be designed so the intended working region flexes rather than forcing repeated movement into a tight forming radius.
What should I send for an application review?
Send the assembly drawing or a clear sketch, the working positions, the force or torque you need, expected cycles, environment and quantity. If an existing spring is being replaced, include its dimensions and explain what is not working well in the current design.
Same application family