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Plastic Knobs

 (10 product groups)

Industrial plastic knobs are used in extreme thermal settings, environments that might involve water or lubricant, and in cases when grip is important. Reid Supply carries the leading manufacturers of plastic knobs including Jergens and Rogan knobs.

Types of Plastic Knobs

We carry all styles of knobs that come in plastic, including clamping plastic knobs, plastic screw knobs, plastic knobs for bolts, wing knobs, lobed knobs, and more. Browse our entire plastic knobs collection online.

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4 Arm Prong Knobs

Lobed knobs, also called clamping knobs, have a scalloped edge with four grip points to allow for maximum grip and comfort, even while wearing gloves.

These durable lobed knobs are impact- and chemical-resistant and provide a neat appearance for finished applications that require precision adjustments.

Reid Supply has a wide range of 4-lobed knobs, from plastic knobs to stainless steel and iron in a variety of thread sizes and mounting types.

Learn more about what solutions exist for your application in our article on selecting the right knobs and handles.

6 Arm Prong Knobs

6-lobed prong knobs provide a symmetrical grip across a variety of materials for customizing clamping and manual adjustment of workpieces or equipment.

Our 6-arm prong knobs come in steel, aluminum, plastic, and with a variety of insert threading materials, from brass to steel.

Find the inch or metric size you need for your lobed knob needs online today.

Learn more about the differences between types of lobed knobs by visiting our knowledge center and reading how to Select the Right Knobs and Handles.

Ball Knobs

Ball knobs can be used to simply grip an appliance or provide ergonomic clamping pressure in a variety of ways. Ball knobs are commonly found on machine tools, jigs, fixtures, and control levers, or used as replacement parts to have on hand.

Our ball knobs come in a variety of shapes and materials from leading suppliers of industrial knobs, including DimcoGray, Elesa, and Kipp.

Shop for ball knobs online or in our digital catalog to ensure you get the exact part you’re after.

Clamping Knobs

Control Knobs with Markings are ideal on applications that require fine, precise position adjustments. These knobs are designed with an ergonomically shaped knurled rim and indicator mark for accurate setting and adjustment.Control Knobs with Arrows are ideal on applications that require fine, precise position adjustments. These knobs are designed with an ergonomically shaped knurled rim and easily legible laser engraved arrow for accurate setting and adjustment.

Control Knobs

Industrial control knobs come with precise indicator markings and are ideal for applications that require fine, precise position adjustments with manual operation.

These knobs are designed with an ergonomically shaped knurled rim and indicator mark for accurate setting and adjustment.

We carry standard 1/2 inch control knobs in various shapes and pointer styles for your ideal use case.

Learn more about the many types of industrial knobs available through Reid Supply by reading our free Knob Guide.

Knurled Knobs

Knurling comes in a variety of patterns depending on the application of the knobs you need to help clamp or adjust tools across a variety of workspaces.

Knurled knobs in vertical or diamond patterns increase grip ability, which makes it ideal for scenarios where grip may not be guaranteed due to contact with water or lubricants.

There are many types of knobs that use knurling. Explore all your options for materials and types of knobs by downloading our Guide to Knobs and Handles e-book.

Shop industry-leading DimcoGray knurled knobs of all shapes and patterns at Reid Supply.

You can learn more about the types of knurling available across knobs and handles by reading our article on common knurling types.

Lobed Knobs

Sometimes referred to as fluted knobs, lobed knobs with 10 lobes bridge a valuable gap between lobed knobs and knurled knobs by bringing wider grips than a typical knurled knob, while increasing the number of lobes over much wider gaps in knobs with fewer lobes.

They are ideal in setups where a "soft" grip is desired for hand cranking on equipment or workpieces.

Not sure whether a knob or handle is appropriate for your setup?

Check out our Engineer Guide to Knobs, Handles, and Handwheels to find the material and style of knob or handle that works best for your project’s specifications.

Star Knobs

Star knobs, or 5-lobed knobs, are a common sight in manufacturing environments as well as end products in a variety of industries.

We carry a wide variety of star knobs in heavy-duty materials such as cast iron, steel, and plastic with multiple types of insert material.

Shop manufacturers of industry-leading knobs such as Rogan, Elesa, and Kipp online right now or read more about lobed knobs in our downloadable guide to knobs.

Tapered Knobs

Tapered knobs are commonly found on machine tools, jigs, fixtures, and control levers, sometimes preferred due to the shape of the apparatus or end products.

Tapered knobs come in female and male threaded insert as well as press-on applications. We carry knobs by DimcoGray, Kipp, and Rogan so you can always find exactly the product you're looking for.

Reid Supply has a complete library of industrial tapered knobs, including these styles:


Learn more about the different types of knobs available for your project’s specifications by reading our article on Selecting the Right Knobs and Handles.

Wing Knobs

Wing knobs are designed to give good leverage with minimal grip strength, making them ideal for applications that require frequent tightening and loosening, or in more precision applications.

These knobs do not require tools and can be easily adjusted using only a thumb and forefinger, similar to thumb screw knobs, but with an added arm.

We carry wing knobs in a wide variety of thread sizes from 1-inch wing knobs to 3-inch wing knobs, ensuring you'll find exactly what you need by the manufacturer you trust.