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F-BohrFix® ZB has been created by timber engineers to provide a secret-fix solution for “tongue and groove” profiled cladding. The unique shank design allows for fastening close to the edge of the board without the timber splitting. The succeeding cladding board then conceals the neat 3.2mm head of the F-BohrFix® ZB. The result is a securely fixed façade with a clean, fix-free appearance.

SIHGA F-BohrFix ZB Secret Fixing for Timber Cladding

Dimensions Sec.component Characteristic Values
F-BohrFix® ZB AD Tensile force F1 [kN]
d1 x L [mm] Head  Thread
3.2 x 40 16 0.12 0.34

*Other sizes available on request


To purchase F-BohrFix® ZB Screws click here


  • Milled from hardened high-grade stainless steel
  • Easily enables secret-fixing
  • Designed by timber engineers for timber specialists