Welding Technology 

FASTEKS® WELKO Stud Welding System 

Our FASTEKS WELKO capacitor discharge stud welding system provides weld studs, bushes, pins, and other fasteners, as well as various stud welding machines. 
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Two people discussing design of a fastener.

Capacitor Discharge Stud Welding 

Stud welding with capacitor discharge has been used successfully worldwide for many years. Welding is carried out by the discharge of capacitors in a very short time span of 1 to 3 ms at the ignition tip of the welding elements. This method has proven to be very advantageous, particularly in the automotive industry, in sheet metal processing, and in the design of decorative metal objects.  

The tip-ignition process enables you to weld studs, bushes, and pins in sizes ranging from M3 to M8 (M10), or from 3 to 8 mm in diameter, at lightning speed. We also carry insulation nails, cupped-head pins, and earthing tags in our product portfolio. In addition, we offer an extensive selection of stud welding machines of the latest technology, from welding guns to CNC stud welding systems, in a variety of sizes and configurations.  

Overview of FASTEKS® WELKO Stud Welding Fasteners

Welding Studs 

A FASTEKS WELKO copper plated welding stud on white background
  • Materials: stainless steel A2, steel 37-3, copper plated, aluminum EN AW-AlMg3  
  • Thread sizes: M3 to M8  
  • Other versions available on request 

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A FASTEKS WELKO copper plated welding stud on white background

Welding Pins 

A FASTEKS WELKO welding pin for capacitor discharge stud welding on white background
  • Materials: stainless steel A2, steel 37-3, copper plated, aluminum EN AW-AlMg3  
  • Thread sizes: M3 to M8  
  • Other versions available on request  

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A FASTEKS WELKO welding pin for capacitor discharge stud welding on white background

Welding Bushes 

A FASTEKS WELKO welding bush on white background
  • Materials: stainless steel A2, steel 37-3, copper plated, aluminum EN AW-AlMg3  
  • Thread sizes: M3 to M5  
  • Other versions available on request 

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A FASTEKS WELKO welding bush on white background

Earth Tags 

A FASTEKS WELKO copper plated earth tag on white background
  • Materials: stainless steel A2, steel 37-3, copper plated, aluminum EN AW-AlMg3  
  • Designs: Type L, Type U  
  • Other versions available on request  

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A FASTEKS WELKO copper plated earth tag on white background

Insulation Fasteners 

A FASTEKS WELKO insultation fastener on white background

Available in various forms and materials, such as:  

  • Cupped-head insulation pins – Nail: steel 37-3, copper plated, with shaft insulation  
  • Cupped-head insulation pins – Disc: steel 37-3, galvanized  
  • Insulation nail, coned: stainless steel A2, steel 37-3, copper plated  
  • Insulation clips: stainless steel 1.4301, steel 36-2, galvanized  
  • Other versions available on request

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A FASTEKS WELKO insultation fastener on white background