Compression Spring (ISO / DIN) are specified where the joint requires storing and returning mechanical energy. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to. Stocked across roughly M0.6 to M5, they cover light-duty and instrument-scale work.
Typical Applications for Compression Spring — ISO / DIN (Series 145)
The most common settings where these are specified:
- General machine building: fastening covers, brackets, motors and sub-assemblies on production equipment.
- Maintenance & repair (MRO): a stocked size for servicing existing plant where the original fastener spec must be matched.
- Fabrication & metalwork: bench and on-site assembly of steel frames, enclosures and weldments.
- Mechanisms & latches: return and detent forces in moving assemblies.
- Valves & actuators: controlled closing or opening force.
How to Specify Compression Spring — ISO / DIN (Series 145) for Your Application
- Size: Match the nominal size to the mating thread or hole. This product spans M0.6–M5; check the full table below for the exact dimensions of each size.
- Material: Choose the material and finish for the service environment — plated steel for general use, stainless for corrosion resistance.
- Environment: For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- Standard: This product is supplied to ISO / DIN. Quoting the standard on your order guarantees interchangeable dimensions between suppliers.
Where Compression Spring — ISO / DIN (Series 145) Are Not the Right Choice
Not where a precise, repeatable force is needed without rating the spring, and avoid over-stressing beyond the rated deflection.