Type E - with threaded blind bore
Type C - with plain blind bore, Tol. H7
GN6335.1 Star Knobs Duroplast
These star knobs with all steel boss have an important advantage, in that the face of the boss is exactly square to the bore and is in steel to prevent edge breakages. Cross-dowels can be used successfully. Strong and long lasting, they are a cost effective choice.
Plastic, Duroplast (PF), black, shiny finish.
Bush - Steel ST, zinc plated, blue passivated.