HECO®-WS – Enhanced efficiency in structural timberwork Produce multiple-shear steel-timber joints more easily and economically using the HECO®-WS system.

You can assemble high-quality steeltimber joints using the HECO®-WS system. The dowels are inserted in the timber and through the steel plates in a single, time-saving operation without pilot drilling. 3 steel plates up to 5 mm thick or 1 steel plate with up to 10 mm thick can be penetrated (steel grade: S235). Producing joints for framework structures has been a complicated process to date. The new HECO®-WS system reduces the procedure to a few operating steps: 1. fitting the steel plate 2. aligning and fixing it in position 3. inserting the dowel



  • Self-drilling dowel, cylindric countersunk head
  • T-Drive
  • Thread beneath the head
  • Carbon steel
  • Bright zinc plated
  • Diameter [mm]: 7,0
  • Lenghts [mm]: 73-233

The advantages at a glance


Product advantages

  • Self drilling due to special drilling tip
  • Numerous applications
  • Simple, reliable calculation according to EN 1995-1-1
  • High yield moment My,k=31,93 Nm
  • High fire resistance



  • Easy to use with no pre-drilling of steel or timbers (max. 10mm; max. S235)
  • Dismountable
  • Fastening via the thread underneath the head
  • Form-fitting direct fastening results in maximum fitting accuracy
  • Aesthetically pleasing countersunk and no break-through fastening


Application examples:

Frame corner
Supporting joint
Post and rail joint
Fixed column base plate
Framework joint