Fixed Polypropylene 4-Arm Knobs

4-Arm Clamping Knobs provide a secure multilobed grip to position, tighten, and hold fixtures, equipment, and machinery. We offer a large selection of knob sizes, thread configurations and ergonomic grips to meet your design requirements. Our pronged knobs feature a plastic base design that provides excellent chemical resistance and a more economical choice opposed to all-steel versions.

Self-Assembly Knobs are designed without internal fasteners and allow for a wide range of threaded male and female insert options and come in a wide range of styles to suit any application. These press-fit knobs allow flexibility across standard hardware and socket head screws.