4-Arm Knobs
Available219 products
Four-arm knobs have four lobes to grip for turning to make adjustments and apply torque. Also known as four-prong knobs, they are typically used in applications that require higher torque than star knobs. These hand knobs serve as basic controls to operate machinery and as simple clamps to secure parts and materials.
4-Arm Knobs with Threaded Hole
Four-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.
Aluminum Knob with Aluminum Thread
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Plastic Knob with Steel Thread
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Thermoset Knob
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Corrosion-Resistant 4-Arm Knobs with Threaded Hole
Corrosion-resistant four-arm 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.
Stainless Steel Knob with Stainless Steel Thread
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Stainless Steel Knob
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4-Arm Knobs with Threaded Through-Hole
Four-arm knobs with a threaded through-hole attach to a threaded bolt, stud, or rod that can pass through the handle.
Aluminum Knob with Aluminum Thread
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Plastic Knob with Steel Thread
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Thermoset Knob
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Corrosion-Resistant 4-Arm Knobs with Threaded Through-Hole
Corrosion-resistant four-arm 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.
Stainless Steel Knob with Stainless Steel Thread
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Stainless Steel Knob
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4-Arm Knobs with Threaded Stud
Four-arm knobs with a threaded stud install in tapped holes with a matching thread size.
Aluminum Knob with Steel Thread
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Plastic Knob with Stainless Steel Thread
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Plastic Knob with Steel Thread
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Thermoset Knob
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4-Arm Knobs with Unthreaded Hole
Four-arm knobs with an unthreaded hole can be tapped to match the threaded bolt, stud, or rod it needs to attach to. The closed end at the handle ensures that the stud doesn't protrude beyond the handle and is generally used on machinery or clamps.
Aluminum Knob
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Corrosion-Resistant 4-Arm Knobs with Unthreaded Hole
Corrosion-resistant four-arm knobs with an unthreaded hole are made of stainless steel for use in wet or humid environments, such as food production, general manufacturing, and pharmaceutical research. Unthreaded holes can be tapped to match the threaded bolt, stud, or rod it needs to attach to. The closed end at the handle ensures that the stud doesn't protrude beyond the handle and is generally used on machinery or clamps.
Stainless Steel Knob
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Corrosion-Resistant 4-Arm Knobs with Unthreaded Through-Hole
Corrosion-resistant four-arm knobs with an unthreaded through-hole are made of stainless steel for use in wet or humid environments, such as food production, general manufacturing, and pharmaceutical research. Unthreaded through-holes can be tapped to match the thread of the stud or rod it needs to attach to. Through-holes allow the bolt, stud, or rod to pass through the handle.
Stainless Steel Knob
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Snap-Lock 4-Arm Knobs
Snap-lock four-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.
Plastic Knob with Plastic Thread
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Quick-Release 4-Arm Knobs
Quick-release four-arm 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.
Aluminum Knob with Aluminum Thread
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Plastic Knob with Brass Thread
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Machinable 4-Arm Knobs
Machinable four-arm knobs can be tapped or reamed to suit the installation requirements.
Aluminum Knob
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