Spiralform®

Termékadatok

  • Overview

    • Design recommendations
    • Suitable for assemblies according to DIN 7500
    • Low thread forming torques due to special thread geometry with self-tapping point
    • The formed thread corresponds to the metric ISO thread DIN 13
    • High strength values and maximum thread engagement due to circular thread cross section

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"CAD & More" provides you with confidential information about our products DELTA PT®, ALtracs® Plus, SHEETtracs® (CAD files, product files, drawings etc.). This data can only be accessed by customers of the EJOT Industrial Division and will not be made


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  • For technical questions please contact our Hotline Team +49 2751 529-123
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CAD & more on ejot.com

With the one-time registration we provide in this area CAD data in various formats as well as PDFs of the technical drawings of our products DELTA PT®, SHEETtracs® and ALtracs® Plus. 
Additionally, CAD & more offers you the possibility to design your individual joints with the aid of prognosis programs or to check their feasibility by APPLICATION CHECKs. Furthermore, you can download the latest product brochures, technical publications and the EJOT company standards.


CAD & more

Reliable steel joints

EJOT Spiralform® screws are special fasteners for reliable and trouble-free metal joints, especially in steel and and stainless steel. Thread-forming and fastening are only one step with this screw. An accurate, tight fitting thread with high strength properties is always formed. This guarantees optimal resistance against loosening under dynamic stress.

Special thread geometry

EJOT Spiralform® screws have four burlings at intervals of 90° which run across the thread in a spiral. This way the VDE requirements for the use of self-tapping screws are met. The Spiralform® Plus point causes very low thread-forming torques. Due to the special formed start of the thread in combination with the circular thread cross section the screw can be applied much easier. The circular cross-section also enables a full thread engagement which results in higher strength properties. High process reliability and consistent thread quality are realised.

Spiralform® is a registrated trade mark of Wilhelm Schumacher GmbH, Hilchenbach.

Spiralform® WN 13 Head Styles and Drives

WN1321 round washer head with TORX®
WN1323 flat countersunk head with TORX®
WN1342 pan head with cross recess Z (or H)
WN1343 flat countersunk head with cross recess Z (or H)
WN1346 hexagon head
WN1347 hexagon head with flange
WN1352 pan head with TORX®
WN1353 oval countersunk head with TORX®

For detailed information, please refer to the EJOT company standard.
You can download these in our service area "CAD & more".
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