Three-arm knobs with a threaded hole attach to a threaded bolt, stud, or rod with same thread size. The closed end (blind hole) ensures that the stud doesn't protrude beyond the handle to prevent marring when used on machinery or clamps.

Hygienic three-arm knobs with a threaded hole seal tightly to mounting surfaces to satisfy requirements for hygienic and sanitary applications in food, beverage, and pharmaceutical industries. They are stainless steel with high-grade polished surfaces that resist corrosion and prevent accumulation of dust and dirt. Threaded holes attach to a threaded bolt, stud, or rod with the same thread size. The closed end (blind hole) ensures that the stud doesn't protrude beyond the handle to prevent marring when used on machinery or clamps.

Three-arm knobs with a threaded through-hole attach to a threaded bolt, stud, or rod that can pass through the handle.

Three-arm knobs with a threaded stud install in tapped holes with a matching thread size.

Snap-lock three-arm knobs have an unthreaded through-hole and integrated molded hex head receptacle that securely holds a nut or bolt to make custom knob configurations. Fasteners snap into place for a secure fit.