S-spring system made of stainless steel

SOLIDO PROTECT-S 4 | 6 Snap System

The reliable S-spring system


The SOLIDO PROTECT-S press stud system is based on the dual S-shaped spring wire made of stainless steel in the eyelet part. The smooth-running and precise fastener offers a broad application range for firmer textile materials and technical applications.


  • Sporty design
  • Smooth running and precise
  • Universal


  • Caps in stainless steel or colourmatching plastic
  • Cap in a fashionable design / custom embossing



The ends of the S-springs open when the ring stud is squeezed

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The Industrial Washing brochure with information on the Solido Protect-S is available for download. From correct processing to application examples, the catalogue offers everything you need to know about the Solido Protect-S push-button system. The document is available in PDF format. If you encounter problems displaying the document in your browser, we recommend that you use Adobe Reader. Download at


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ItemMaterial thickness [mm]Grammage [gr]Clothing
> 200< 200CoatBlousesJacketsTrousers
DSO 4.025
0,3 – 1,5
DSO 6.025
0,3 – 1,5


Item designationDSO 4.025SDSO 6.025S
MaterialStainless steel 1.4401
ProcessingSemi-automatic and fully automatic
Care label1. Household laundry
2. Industrial laundry
Washing procedure for white workwear and/or sensitive coloured trimming items · Peracetic acid bleach Polyester/cotton · Regreasing is absolutely necessary
Norm conformityEN 71-3
DIN EN 1811 Nickel release< 0,28 μg/week
Absence of pollutantsOEKO-TEX Standard 100 (DETOX: We are currently undergoing recertification according to Attachment 6.)Class 2 (Products with direct skin contact)
The item meets the requirements of the REACH Regulation in the respective valid version
The item meets the statutory requirements of the Consumer Goods Ordinance and the Chemicals Prohibition Order in the respective valid version
Tear-off force (N)> 120N
Temperature resistance400˚C
Melting rangeapprox. 1.500˚C
Light-fastISO 105 B02
Corrosion resistancehigh
Additional informationThe item corresponds to the EN 71-1 with regard to the tear-off force if the mixing corresponds to the specification by YKK STOCKO FASTENERS GmbH. We recommend the forward-thinking PREMEO PROTECT-S series as a very durable further development.

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Material properties and thicknesses
The design of your garment is decisive for the correct selection of the suitable SOLIDO system. The permissible fabric thickness is determined by the number of layers of fabric on top of each other and their fabric properties at the attachment position. The fabric thickness is measured using a special micrometer. We are happy to support you in this. Please contact us and send us a sample of the corresponding textile.

Design recommendation / Selection of the right starting position
The attachment positions of the SOLIDO system on the garment should be chosen so that unevenly thick layers of fabric are avoided. The design of the cuff widths (including seams) should be such that the pushbutton design to be selected has sufficient space for a secure connection and seams are avoided.

For multiple fabric layers, it is recommended to attach seams next to the attached SOLIDO push button. This prevents the superimposed layers of fabric from shifting when subjected to lateral stress.

Fabric overlaps (uneven fabric layers) within a cuff or a push-button position should also be avoided. The use of reinforcing tape is recommended to compensate for too thin fabric thicknesses/layers within the cuff. In order to ensure that the serrated ring printer is pulled out of a garment with low fabric strength, reinforcing tape should always be provided on the cuffs.

This leads to incorrect riveting (zigzag bone deflection cores). If the above criteria for selecting the correct attachment position are not taken into account.