Knob Set Screws | McMaster-Carr

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386 Products

Knobs

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.

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.

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.

Oversized-Grip Screw-Head Mount Knobs

Convert screws into knobs so large you can grip them with heavy work gloves. Slip these knobs onto a hex or socket head screw and tighten the set screw to secure. They provide a secure grip to position, tighten, and hold fixtures, equipment, and machinery.

Screw-Head Mount Knobs with Messages

Use these knobs to display important messages. 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.

Unthreaded-Hole Knobs with Handle

A handle makes these knobs easy to turn. Tap custom threads or secure with a set screw to provide a firm 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.

Indicating Knobs

Control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Comfort-Grip Indicating Knobs

A rubber coating or construction provides a comfortable grip. Use these knobs to control devices with round or D-shaped shafts and view settings at a glance with a pointer.

Choose-a-Color Indicating Knobs

Quickly identify equipment controls and components by their color. Use these knobs to control devices with round shafts and view settings at a glance with a pointer.

Turn-Counting Indicating Knobs

For monitoring the number of shaft turns on instrumentation, these knobs have easy-to-read scales or digits for quick and accurate readings. Use them on devices with round shafts.

Dual-Control Comfort-Grip Indicating Knobs

These dual-control knobs operate independently to control two settings. They have a rubber coating for a comfortable grip. Use them on devices with round shafts to view settings at a glance with a pointer.

Pull Knobs

Threaded-Hole Pull Knobs

Thread a screw through a hole from the back of your surface into the knobs to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.

Sanitary Threaded-Hole Pull Knobs

With a sanitary design, these threaded-hole knobs are often used to open and close doors and drawers on furniture, machines, and other equipment in pharmaceutical and food-processing facilities.

Unthreaded-Hole Pull Knobs

Create custom threads to secure these handles to the front of your surface from the backside. Use them to open and close a variety of doors and drawers, including those on furniture, machines, and equipment.