HECO®-WB – Simple solution for lateral tensile reinforcements The fastening system for economical and secure reinforcements for glulam timber structures

Diverse applications can be implemented with the HECO®-WB system, such as: Transverse joints, penetrations, notching, connections, double-pitch roof purlins with arched, arched purlin, double-pitch roof purlin usw. The forces are transmitted solely through the thread indentations – time-consuming application of adhesives is eliminated. The fully countersunk, invisible threaded bars mean that subsequent roof assembly is not obstructed.


Heco WB

  • Headless threaded rod
  • Tensile strength: 800 N/mm2
  • Thread geometry: DIN 7998
  • hardened steel
  • bright zinc plated
  • Diameters [mm]: 16, 20
  • Length [mm]: 3000, individually cut to length

The advantages at a glance


Product advantages

  • lateral tensile reinforcement without gluing
  • no glueing authorisation requested
  • without temperature requirements
  • easy and reliable calculation
  • hohe Zugfestigkeit 800 N/mm2
  • approved and monitored product according to Z-9.1.777



  • individually cut to length
  • easy storage
  • time saving of up to 50%
  • Insertion sleeve for countersinking


Application examples:

Transverse joints
Main/secondary beams
Double-pitch roof purlin

Assembly Instructions

Pilot drilling with column type drill
Cut threaded bar to exactly the required length using metal saw or right-angle grinder
Install the threaded bar using a drill with high torque
Countersink HECO®-WB with insertion sleeve
Release insertion sleeve with ratchet
Cover hole with end-grained wooden plug