|Knob body: Black technopolymer plastic (Polyamide PA), smooth, glossy
Threaded stud: Stainless steel, European Standard No. 1.4567 (American Standard Series 304 Cu), molded-in
Thrust pad: Black technopolymer plastic (Polyamide PA), matte
||GN 421.12 hollow knurled knobs have a ball end whose diameter is smaller than the core diameter of the thread.
The thrust pad swivels 15° is easily clipped on and taken off. Thrust pads are supplied unmounted.
In clamping applications, the partially
protruding steel hub of the knurkled knob prevents chipping of the plastic.
Temperature resistant to 194° F (80 °C).