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Thru Hole Knob Manufacturer

Delivering a solution at DimcoGray means much more than providing the right thru-hole knob for the job. We develop relationships with our OEM customers that enable them to reduce costs and enhance their operational performance. Our thru-hole knobs and handles specialists can help you reduce your supplier base, manage inventory, and lower your overall costs by developing a supplier partnership tailored to your specific needs.

Manufactured Thru Hole Knobs

Nearly all of our knobs and handles are available in thru-hole options. Thermoplastic thru-hole knobs and handles are used in a variety of equipment to ensure proper clamping. Some of the common thru hole knobs we supply include:

Sizes Available for Thru Knobs

DimcoGray manufactures thru knobs in a variety of sizes and diameters depending on your application.  We offer thru knobs ranging from .25” to 3/8-16”.


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red and black plastic thru hole knobs

Materials Offered

DimcoGray understands that different applications for the star knob can require different materials. We provide the 5-lobe knob in the following materials:

  • Thermoplastic
  • Soft-Feel
  • Phenolic


Our company also provides different material options for the insert. We offer the following materials for the fastening method on our star knobs:

  • Brass Insert
  • Brass Threaded Insert
  • Zinc Stud

Common Applications and Industries

Always constructed and designed with ergonomic durability in mind, DimcoGray's plastic knobs with thru-holes and handles are ideal in rotary applications requiring accurate control and flexible adjustments.  

As knob suppliers to leading OEMs, DimcoGray is widely recognized for delivering quality thru-hole knobs and handles for equipment controls, mechanical controls and industrial equipment across multiple industries. We know that quality is assumed in today's competitive global environment, which is why DimcoGray has transformed its business to go beyond the expected. Some of the common industries include:

Product Highlights

You can select the desired shape and size industrial knob to download a basic part drawing. Specify attachment type and method as well as thread type and size (if applicable) to access detailed CAD drawings for use in your industrial knob assembly.

View All Thru Hole Knobs

Product Catalog

DimcoGray’s vast selection of handles and knobs are integral components used in equipment produced by some of the world’s largest OEMs in a variety of industries. Our expertise in producing high-quality plastic knobs and plastic handles is the reason our customers depend on us for the most challenging. 

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More About Custom Molding Orders

DimcoGray has been in the business of molding plastics since 1924. Our reputation of providing an extensive line of quality knobs and handles is synonymous with the DimcoGray name... and still is today.


How To Measure

DimcoGray offers plastic Thru Hole Knobs in a variety of shapes and sizes. When determining the size Thru Hole Knob you need for your project, please reference the line drawing provided to determine the handle that is right for you! If you have any questions about how we measure our knobs and handles, please feel free to reach out.

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Thru Hole Knobs Manufacturer

Why DimcoGray?

Never satisfied with the status-quo, our business is constantly evolving to help customers manage their bottom line. We are wholly committed to producing the reliable, durable thru-hole knobs and handles that have made DimcoGray well-known throughout the industry for more than 95 years. Thru-hole solutions are ideal for a variety of applications, from industrial equipment to farm and construction machinery, while still meeting the ergonomic needs for human-machine interface. DimcoGray supplies reliable, ergonomic thru-hole knobs and handles suitable for every foreseeable application.

While thru-hole knobs and handles are available from a number of sources, only DimcoGray delivers business solutions that go beyond product availability and price. Contact us today to request a quote for our thru knob products.

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Contact Information

900 Dimco Way
Centerville, Ohio 45458

937 433 7600