|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
Tip: Brass or plastic (Polyacetal POM)
||GN 421.10 hollow knurled knobs with tips in brass or plastic are used in applications where marks and damage on the workpiece are unacceptable.
In clamping applications, the partially
protruding steel hub of the knob prevents chipping of the plastic.