• Shaped parts and supplies must have polished chamfers, straight-grained sides and smoothed down or leveled faces.

  • Screw heads have to be polished or circular satin-brushed with chamfered edges and slots.

  • The domed screw heads must be polished or circular satin-brushed.

  • Coloring is permitted providing the finish conforms.

  • The end of the screw foot must be polished and have no trace of its detachment.

  • The flat or domed ends of pins must be polished.

  • All parts that are not mentioned in the technical regulations must comply with the requirements laid down in the homologation of the caliber.