Type E - with threaded blind bore
Type C - with plain blind bore, Tol. H7
GN 6335.2 Star Knob, Technopolymer
These technopolymer star knobs with an 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, with the protruding bush allowing a perfect connection. Strong and long lasting, they are a cost effective choice.
Plastic, Tecnopolymer (Polyamide PA), shock-resistant, black, matt finish
Bush - Steel, zinc plated, blue passivated.
Also available as GN6335.2 with stainless steel bush, ideal for cleanrooms.