Order extension springs – precision from 0.08 mm wire diameter
Precisely CNC-manufactured extension springs from micro to industrial sizes, ISO-certified and in Swiss quality, individually configurable for demanding technical applications.
High dimensional accuracy and repeatability for precise applications
Consistent and reliable tensile force
Wire diameter from 0.08 mm for micro to industrial extension springs
Technical data
ISO-certified company
RoHS compliance fulfilled
Made in Switzerland
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ISO-certified company
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RoHS compliance fulfilled
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Made in Switzerland
- Spring ends
According to DIN 2097 (all forms) or according to customer requirements.
- Spring body
Cylindrical, conical, double conical, etc.
- Materials
Spring steel wires according to DIN/EN 10270-1
Copper wires according to DIN 17682, and other special alloys.- Surfaces
Raw bright, greased, galvanized, painted, Delta-Tone coated,
shot-peened, and others- Manufacturing tolerances
DIN EN 15800-2092-2094-2097
- Testing procedure
Dimensional, force, and functional testing using modern measurement and test technology in accordance with international standards.
- Delivery forms
Small series, large series, sample production, and prototypes – flexible according to project and industry requirements.
- Documentation & Traceability
Comprehensive production documentation, material certificates (3.1), batch traceability, as well as customer-specific inspection reports available.
PDF for tension spring to fill out and print
The PDF file can be filled out on screen and printed.
Why extension springs from FpP?
Our extension springs have been manufactured with high precision and reliable spring characteristics since 1989. Now order extension springs or configure them individually.
Precise manufacturing from 0.08 mm wire diameter
Modern CNC technology for process-reliable production and tight tolerances
Custom designs and series production under one roof
Advanced measurement technology & strict quality controls
Efficient processes for short delivery times – ideal when you order extension springs
Worldwide use in automotive, medical technology, mechanical engineering, and electrical engineering, etc.
Expert consultation from spring specialists
From the concept phase to series production, we support you in developing the optimal spring solution. If you order extension springs or require an individual configuration, we will quickly prepare a precise, reliable quotation tailored to your technical requirements.
Frequently Asked Questions
FpP manufactures a wide range of products, including compression springs, extension springs, torsion springs (leg springs), flat springs, air coils, stamped and bent parts, as well as custom wire and strip formed parts. Both standard and special designs are possible.
Yes, FpP is very flexible: we manufacture both prototypes and sample parts as well as small and large series. Thanks to modern CNC technology and in-house tool development, we can optimally adapt production to the requirements.
We process a wide range of materials, such as spring steels, stainless steel, special and custom alloys. Through our extensive partner network, we can also offer a wide variety of surface treatments, such as coatings, polishing, or heat treatment.
Ideally, you should send us a drawing (PDF/STEP), specifications, or a sample. Important details include, among others, wire diameter, spring shape, dimensions, spring travel/force, required tolerances, material, and quantity. If details are missing, we will support you with the design.
We manufacture everything from single parts and prototypes to small and large series. Pricing depends on geometry, material, tolerance requirements, and quantity.
Prototypes and sample parts are usually produced at short notice. The exact delivery time depends on complexity, material, and current capacity – after receiving your data, we will immediately provide you with a binding statement.
Our manufacturing is ISO-certified and supported by modern inspection technology. Depending on your requirements, we check dimensional accuracy, spring characteristic curves, surface quality, and material conformity.
We manufacture according to DIN EN 15800 / 2092 / 2094 / 2097. For highly demanding applications, tighter, customer-specific tolerances are possible – we are happy to advise you based on your specifications.
Yes. We assist with the selection of wire diameter, spring shape, number of coils, material, and surface, as well as with the design for force, spring travel, and service life.
This is precisely one of our strengths. We realize demanding, high-tolerance spring solutions – even where standard suppliers reach their limits.
Yes. Depending on the application, we offer, for example, zinc, nickel, chrome, tin, Delta-Tone/Delta-Seal, zinc flake coating, phosphating, or powder coatings including color marking.
Yes. Our springs are used internationally, and we deliver reliably worldwide – both small quantities and series.
Yes. We manufacture in compliance with RoHS and provide material certificates or conformity documentation upon request.
Yes. If you have a sample part, we analyze the geometry and spring characteristic curve and manufacture a suitable solution – including optimization suggestions.
No – one-off productions are possible. We advise on the economically optimal series quantity.
Inquiry → technical clarification → quotation → prototype (optional) → series production → quality inspection → delivery.
Yes, we sign NDAs to ensure confidential collaboration.
Yes, upon request we provide first article inspection reports (FAI), measurement reports, and additional quality documentation.