Screws - HSB Hardwood | Rothoblaas
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Screws - HSB Hardwood | Rothoblaas

  • Use

  • Applications

  • Characteristics

    BIT included
  • Format

    Head: 60° taper with under-head ribs
  • Sizes

    Diameter: 7,0 and 9,0 mm, Length: from 80 mm to 240 mm
  • Certification

    ETA 11/0030

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More about this product

HBS Hardwood from Rotoblaas are countersunk screws for use on hardwoods.


  • Hardwood Certification
    Special tip with diamond geometry and notched, serrated thread. ETA 11/0030 certification for use with high-density timber without any pre-drill. Approved for structural applications subject to stresses in any direction vs. the grain (α = 0° - 90°).
  • Larger Diameter
    Inner tip diameter increased to ensure tightening in the highest density woods. Excellent twisting moment values. HBS H Ø6 mm, comparable to a diameter of 7 mm; HBS H Ø8 mm, comparable to a diameter of 9 mm.
  • 60° Countersunk Head
    Concealed head, 60°, for effective, minimally invasive insertion, even in high-density woods.

Certification and Testing

Values tested, certified and calculated for high-density woods such as beechwood Microllam® LVL. Certified for use without pre-drilling, for densities of up to 780 kg/m3. Also tested on structural woods such as beech, cypress, eucalyptus, bamboo.

Fields of Use

  • Wood-based panels
  • Solid timber and glulam
  • CLT, LVL
  • High-density woods
  • Beech, cypress, eucalyptus, bamboo
  • Service classes 1 and 2

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