Fluted 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.

Corrosion-resistant fluted knobs with a threaded hole are made of stainless steel for use in wet or humid environments, such as food production, general manufacturing, and pharmaceutical research. 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.

Hygienic fluted 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.

Corrosion-resistant fluted knobs with a threaded through-hole are made of stainless steel for use in wet or humid environments, such as food production, general manufacturing, and pharmaceutical research. Threaded through-holes attach to a threaded bolt, stud, or rod that can pass through the handle.

Fluted knobs with a threaded stud install in tapped holes with a matching thread size.

Quick-release fluted knobs have a threaded through-hole that slides easily over a threaded rod or stud and locks in place when tightened and pressure is applied by the work surface. They're used when knobs need to be fully removed and reinstalled quickly between applications.