Rosette Knobs | McMaster-Carr

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430 Products

Knobs

Screw-Head Mount Knobs

To build a custom knob or thumb screw, pair one of these knobs with a hex or socket head screw. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Screw-Head Mount Knob Assortments

Keep a convenient selection of knobs on hand. To build a custom knob or thumb screw, pair one of these knobs with a socket head screw. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Threaded-Stud Knobs

Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Choose-a-Color Threaded-Stud Knobs

Identify equipment controls and components at a glance by their color. Mount these knobs into a threaded hole. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Comfort-Grip Threaded-Stud Knobs

A rubber coating provides a comfortable grip to position, tighten, and hold fixtures, equipment, and machinery. Mount these knobs into a threaded hole.

Vibration-Resistant Threaded-Stud Knobs

Bonded to the stud is an acrylic adhesive that adds friction to resist loosening from vibration. Use these knobs to position, tighten, and hold fixtures, equipment, and machinery. They mount into a threaded hole.

Tethered Threaded-Stud Knobs

Never lose these knobs—tether them to equipment to keep them where you need them. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Mount them into a threaded hole.

Left-Hand Threaded-Stud Knobs

Knobs have left-hand threads; they're used in applications where counterclockwise motion can loosen common right-hand threads. Mount them into a threaded hole to position, tighten, and hold fixtures, equipment, and machinery.

Choose-a-Color Threaded-Hole Knobs

Identify equipment controls and components at a glance by their color. Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Threaded-Hole Knobs

Install these knobs on a threaded stud. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Comfort-Grip Threaded-Hole Knobs

A rubber coating provides a comfortable grip to position, tighten, and hold fixtures, equipment, and machinery. Install these knobs on a threaded stud.

Tethered Threaded-Hole Knobs

Never lose these knobs—tether them to equipment to keep them where you need them. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery. Install them on a threaded stud.

Sanitary Threaded-Hole Knobs

Designed for sanitary environments, these knobs are commonly used in pharmaceutical and food-processing facilities. Install them on threaded studs to position, tighten, and hold equipment.

Threaded Through-Hole Knobs

Long shafts can thread through these knobs for mounting versatility. The knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Vibration-Resistant Threaded Through-Hole Knobs

Like locknuts, these knobs have a nylon insert that grips threads to resist loosening. Long shafts can thread through these knobs for mounting versatility. Use the knobs as a grip to position, tighten, and hold fixtures, equipment, and machinery.

Comfort-Grip Threaded Through-Hole Knobs

A rubber coating provides a comfortable grip to position, tighten, and hold fixtures, equipment, and machinery. Long shafts can thread through these knobs for mounting versatility.

Quick-Lock Threaded Through-Hole Knobs

Quick to install, position, and remove, these knobs have an angled hole that allows you to tilt the knob to slide it over threads, then straighten it to grip the threads and secure the knob. They provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Unthreaded-Hole Knobs

Tap custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery.

Unthreaded Through-Hole Knobs

Create custom threads or secure with a set screw to provide a firm grip to position, tighten, and hold fixtures, equipment, and machinery. Long shafts can pass through these knobs for mounting versatility.

Square-Through-Hole Knobs

Primarily used on spigot valves, slide these knobs over valves with a square stem and secure them in place with your fastener.

Machinable-Hub Knobs

Mill specific holes or keyways in the hub to meet your specifications, or weld in place. These knobs provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Precise-Control Knobs

Screw-Head Mount Precise-Control Knobs

To build a custom precise-control knob or thumb screw, pair one of these knobs with a socket head screw. Turn the knob to move the screw 0.005" per graduation and make precise adjustments.

Threaded-Stud Precise-Control Knobs

Mount these knobs into a threaded hole. Turn the knob to move the stud 0.005" per graduation and make precise adjustments.

Door Handles and Knobs

Master Keyed Self-Locking Door Knobs

Unlock these knobs with a master key and a key unique to that door. They are always locked from the outside, but doors can be opened from the inside knob.

Button-Locking Door Knobs

Lock the outside knob with the button on the inside knob.

Washdown High-Traffic Door Knobs

In addition to lasting twice as long as standard door knobs, these are made entirely of corrosion-resistant materials to stand up to washdown and marine environments.

Keyed Alike Key- and Button-Locking Door Knobs

Choose these knobs if you need to open multiple doors with the same key. They also lock and unlock with a button on the inside.

High-Traffic Button-Locking Door Knobs

For frequently used doors, these knobs last twice as long as standard button-locking door knobs.

High-Traffic Door Knobs

For frequently used doors, these knobs last twice as long as standard door knobs.

Door Knobs

Also known as passage knobs, these knobs do not lock.

Keyed Alike Self-Locking Door Knobs

These knobs are always locked from the outside. Unlock multiple knobs with the same key, or turn the inside knob to open.

High-Traffic Key- and Button-Locking Door Knobs

For frequently used doors, these knobs last twice as long as standard key- and button-locking door knobs.

Key-Locking Door Knobs

These knobs can always be opened from the inside, while the locks on the outside each open with a different key.

Key- and Button-Locking Door Knobs

These knobs lock and unlock with a button on the inside or their own unique keys.

Self-Locking Door Knobs

Each of these knobs opens with its own key. The outside handle is always locked, but you can open the door from inside.

High-Traffic Key-Locking Door Knobs

For frequently used doors, these knobs last twice as long as standard key-locking door knobs.

High-Traffic Self-Locking Door Knobs

For frequently used doors, these knobs last twice as long as standard self-locking door knobs.

Master Keyed Key- and Button-Locking Door Knobs

Open these knobs with both a shared master key and key unique to that door, or use the button on the inside.