Material: Aluminium. Screws stainless steel A2-70.
Features: does not damage the shaft, stronger clamping force than with set collars, even distribution of clamping forces, easy readjustment, precision honed bores. The threads of the screws DIN 912 are covered with a layer of polyamide. Tolerance b: +0.08mm -0.25mm . Temperature range: -40°C to +175°C.