What is the best 1/4-20 knob size for your projects? This guide offers a simple and engaging way to discover the ideal knob size, material, and design to enhance your woodworking or machine tool experience.
Finding the right 1/4-20 knob size can make your projects easier and more efficient. Whether you’re working on woodworking jigs or machine tools, the right knob ensures a secure grip and smooth adjustments. This guide will help you choose the best option for your needs.
From plastic to nylon, these knobs come in various materials, each with unique benefits. Some are ergonomic, while others are built for heavy-duty use. Understanding these differences will help you make the perfect choice.
Ready to upgrade your tools? Let’s dive into the details and find the ideal 1/4-20 knob size for your projects. You’ll be amazed at how the right knob can transform your work experience.
List of Top 10 1/4-20 Knob Size
| Image | Title | Best For | Price |
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Larrel 20 Pack 1/4-20 Knobs, Black Star Threaded Knobs, Practical Compact Hexagon Head Clamping Knob Hand Knob Tightening Screw for Clamping, Jigs, T Track Applications |
These Larrel 1/4-20 Knobs are perfect for anyone who needs reliable, easy-to-use clamping knobs. Whether you’re working on lathes, jigs, or T-track projects, these knobs offer durable performance and comfortable hand-tightening. |
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FdcZeyxior 6 PCS 1/4-20 Knob Black 6 Star Knobs Threaded Knobs 1/4-20 Hand Tighten Clamping Knob for T Track Bolts JigsKnobs,Sawing Machine |
Perfect for DIY enthusiasts, workshop owners, and professionals, these 1/4-20 star knobs are ideal for anyone needing reliable, ergonomic handles for their projects or machinery. |
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POWERTEC 10 Pack 1/4″-20 5 Star Knobs with 1″ Threaded Stud, Thumb Screw Knobs with bolts for Lawn Mower, Umbrella Base, Woodworking Tools & Jigs, Clamps (QNB3006-P2) |
Perfect for DIY enthusiasts and professionals, these 5-star knobs are ideal for anyone needing secure, tool-less fasteners. Great for woodworking, lawn care, or umbrella bases. |
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Mozeat Lens 30 Pack 1/4-20 Knob 6 Star Knobs 1/4 Inch 20 Threaded Female Hexagon Head Jig Clamping Knobs T Track Bolts Thru Knob, Black |
These 1/4-20 knob sets are ideal for woodworkers and DIY enthusiasts who need a secure and adjustable clamping solution for their jigs and fixtures. If you’re working with routing jigs, saw fences, drill presses, or lathes, these easy-to-use knobs will make your projects a breeze! |
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MroMax 10Pcs 1/4″-20 x 1 Threaded Knurled Thumb Nuts, Black Plastic Knobs Clamping Screws, Grip Knob Screw for Replacing Umbrella Base |
These MroMax threaded thumb nuts are perfect for anyone needing durable, easy-to-install knobs for machine repairs, furniture fixes, or umbrella base replacements. With 10 pieces included, they’re great for daily use or replacements. |
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4 Pcs Star Knobs, 1/4-20 Knob Through Hole Hand Tighten Clamping Knobs Plastic Black Threaded Nuts for T Track Bolts, Jig, Mechanical Equipment(1/4”-20) |
These star knobs are perfect for anyone who needs to tighten screws by hand. They’re great for T-tracks, jigs, machinery, and woodworking tools. |
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POWERTEC 10 Pack 1/4″-20 5 Star Knobs with 2″ Threaded Stud, Thumb Screw Knobs with bolts for Lawn Mower, Umbrella Base, Woodworking Tools & Jigs, Clamps (QNB3010-P2) |
This 10-pack of POWERTEC 5-Star Knobs is perfect for woodworkers, DIY enthusiasts, and anyone who needs to securely fasten equipment without tools. They’re ideal for jigs, clamps, and various tools, offering a strong, comfortable grip for easy adjustments. |
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Usdrwam 1/4″-20 Star Knobs Female Thread, Black Nylon Clamping Knobs with Metal Insert for Light Duty Machinery, Jigs & Fixtures, 12 Pack |
These 1/4″-20 Star Knobs are perfect for anyone needing a quick and easy way to secure light-duty equipment. They’re ideal for DIY enthusiasts, makers, and hobbyists who frequently adjust things on their 3D printers, jigs, or fixtures. |
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Elegaperma 30pcs 1/4-20 Star Knobs,1/4″-20 Female Threaded Star Knobs,Hexagon Head Through Hole Clamping Knob,Black Nylon Screw-On Type Thru Threaded Knob Nuts for T Track Bolts,Machine Tool |
This 1/4-20 star knob set is perfect for DIY enthusiasts, machinists, and anyone who needs to securely fasten parts on T-tracks, jigs, or machine tools. They offer an easy-to-grip solution for quick adjustments without needing extra tools. |
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POWERTEC 5 Pack 1/4″-20 5 Star Knobs, Thumb Screw Threaded Knobs for T Track & Table Saw Accessories, Featherboard, Woodworking Jigs on Miter Saw, Router Table, Drill Press (71072) |
These POWERTEC 5 Star Knobs are perfect for woodworkers who need secure, easy-to-use knobs for their shop-built jigs, fences, and featherboards. They’re great for anyone using tools like table saws, routers, or drill presses. |
Detailed Reviews
Discover the top 10 1/4-20 knobs in this expert-curated guide. Each product is thoroughly reviewed for performance and value. Whether you need comfort or affordability, this guide has you covered. Find the perfect knob to suit your needs and upgrade your projects today.
1. Larrel 20 Pack 1/4-20 Knobs, Black Star Threaded Knobs, Practical Compact Hexagon Head Clamping Knob Hand Knob Tightening Screw for Clamping, Jigs, T Track Applications

Upgrade your tools with these Larrel 20 Pack 1/4-20 Knobs. They are made from premium plastic and brass. These knobs are built to last.
Get a secure grip with their hexagon head. They are easy to tighten by hand.
These knobs fit standard 1/4-20 threads. They are perfect for jigs, fixtures, and T-track applications. Make your work easier today.
| Pros | Cons |
|---|---|
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Perfect For:
These Larrel 1/4-20 Knobs are perfect for anyone who needs reliable, easy-to-use clamping knobs. Whether you’re working on lathes, jigs, or T-track projects, these knobs offer durable performance and comfortable hand-tightening.
Ready to Purchase?
2. FdcZeyxior 6 PCS 1/4-20 Knob Black 6 Star Knobs Threaded Knobs 1/4-20 Hand Tighten Clamping Knob for T Track Bolts JigsKnobs,Sawing Machine

Upgrade your tools with these tough and reliable FdcZeyxior 6-star knobs. Made from strong nylon and brass, they’re built to last and look great.
These ergonomic knobs offer a comfy grip. They have a standard 1/4-20 thread for easy fitting. Get a set of six for all your projects.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for DIY enthusiasts, workshop owners, and professionals, these 1/4-20 star knobs are ideal for anyone needing reliable, ergonomic handles for their projects or machinery.
Ready to Purchase?
3. POWERTEC 10 Pack 1/4″-20 5 Star Knobs with 1″ Threaded Stud, Thumb Screw Knobs with bolts for Lawn Mower, Umbrella Base, Woodworking Tools & Jigs, Clamps (QNB3006-P2)

Upgrade your equipment with 10 POWERTEC 5-Star Knobs! These handy knobs offer a secure hand-grip to easily position and tighten your tools. They are perfect for a wide range of applications.
These knobs are tool-less fasteners. They replace old knobs easily. Get a firm grip every time.
From woodworking jigs to heavy-duty clamping, these premium design knobs are your go-to solution. Made with durable black thermoplastic and a strong zinc-plated steel stud, they’re built to last.
| Pros | Cons |
|---|---|
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Perfect For:
Perfect for DIY enthusiasts and professionals, these 5-star knobs are ideal for anyone needing secure, tool-less fasteners. Great for woodworking, lawn care, or umbrella bases.
Ready to Purchase?
4. Mozeat Lens 30 Pack 1/4-20 Knob 6 Star Knobs 1/4 Inch 20 Threaded Female Hexagon Head Jig Clamping Knobs T Track Bolts Thru Knob, Black

Mozeat Lens 30 Pack includes 1/4-20 star knobs with female hexagon heads. Each knob has a brass insert for durability and strength. They work well for clamping and holding jigs with ease.
These knobs are easy to tighten and loosen with little effort. They fit 1/4-inch 20 threads and are great for routing jigs, drill presses, and lathes.
| Pros | Cons |
|---|---|
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Perfect For:
These 1/4-20 knob sets are ideal for woodworkers and DIY enthusiasts who need a secure and adjustable clamping solution for their jigs and fixtures. If you’re working with routing jigs, saw fences, drill presses, or lathes, these easy-to-use knobs will make your projects a breeze!
Ready to Purchase?
5. MroMax 10Pcs 1/4″-20 x 1 Threaded Knurled Thumb Nuts, Black Plastic Knobs Clamping Screws, Grip Knob Screw for Replacing Umbrella Base

Upgrade your projects with these 10 sturdy knurled thumb nuts! They offer a secure grip and are perfect for a variety of uses.
These black plastic knobs are made from tough carbon steel and durable plastic. They are easy to install and won’t scratch your hands.
Use them for machine parts, furniture, or even to fix your umbrella base. You get plenty of them for all your needs.
| Pros | Cons |
|---|---|
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Perfect For:
These MroMax threaded thumb nuts are perfect for anyone needing durable, easy-to-install knobs for machine repairs, furniture fixes, or umbrella base replacements. With 10 pieces included, they’re great for daily use or replacements.
Ready to Purchase?
6. 4 Pcs Star Knobs, 1/4-20 Knob Through Hole Hand Tighten Clamping Knobs Plastic Black Threaded Nuts for T Track Bolts, Jig, Mechanical Equipment(1/4”-20)

Secure your projects with these handy star knobs! They offer a strong grip for easy adjustments.
These knobs are made from tough nylon with strong metal threads. They are built to last. You can tighten and loosen them by hand. No tools are needed!
Their special design lets screws pass right through. This makes them super flexible for any job. Use them on t-tracks, jigs, and machines.
| Pros | Cons |
|---|---|
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Perfect For:
These star knobs are perfect for anyone who needs to tighten screws by hand. They’re great for T-tracks, jigs, machinery, and woodworking tools.
Ready to Purchase?
7. POWERTEC 10 Pack 1/4″-20 5 Star Knobs with 2″ Threaded Stud, Thumb Screw Knobs with bolts for Lawn Mower, Umbrella Base, Woodworking Tools & Jigs, Clamps (QNB3010-P2)

Get a firm grip on your projects with the POWERTEC 10 Pack 5 Star Knobs! These handy knobs offer a secure hold for all your tools and equipment.
They’re perfect for woodworking. Easily tighten or adjust your gear. Get yours today and simplify your tasks!
| Pros | Cons |
|---|---|
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Perfect For:
This 10-pack of POWERTEC 5-Star Knobs is perfect for woodworkers, DIY enthusiasts, and anyone who needs to securely fasten equipment without tools. They’re ideal for jigs, clamps, and various tools, offering a strong, comfortable grip for easy adjustments.
Ready to Purchase?
8. Usdrwam 1/4″-20 Star Knobs Female Thread, Black Nylon Clamping Knobs with Metal Insert for Light Duty Machinery, Jigs & Fixtures, 12 Pack

Grip these star knobs with ease for quick adjustments. Their ergonomic star design means no tools are ever needed. Tighten and loosen them by hand in a flash.
These knobs have a standard 1/4″-20 thread. This makes them easy to fit onto most bolts and studs. The durable nylon body has a metal insert for extra strength.
They are perfect for light-duty jobs. Get a 12-pack to tackle all your projects.
| Pros | Cons |
|---|---|
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Perfect For:
These 1/4″-20 Star Knobs are perfect for anyone needing a quick and easy way to secure light-duty equipment. They’re ideal for DIY enthusiasts, makers, and hobbyists who frequently adjust things on their 3D printers, jigs, or fixtures.
Ready to Purchase?
9. Elegaperma 30pcs 1/4-20 Star Knobs,1/4″-20 Female Threaded Star Knobs,Hexagon Head Through Hole Clamping Knob,Black Nylon Screw-On Type Thru Threaded Knob Nuts for T Track Bolts,Machine Tool

Get 30 star knobs for your projects! These 1/4-20 knobs are super handy. You’ll have plenty to go around.
These knobs are made tough with plastic and steel. They are built to last.
Easily tighten and loosen them by hand. They fit 1/4-20 threads perfectly for great performance.
| Pros | Cons |
|---|---|
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Perfect For:
This 1/4-20 star knob set is perfect for DIY enthusiasts, machinists, and anyone who needs to securely fasten parts on T-tracks, jigs, or machine tools. They offer an easy-to-grip solution for quick adjustments without needing extra tools.
Ready to Purchase?
10. POWERTEC 5 Pack 1/4″-20 5 Star Knobs, Thumb Screw Threaded Knobs for T Track & Table Saw Accessories, Featherboard, Woodworking Jigs on Miter Saw, Router Table, Drill Press (71072)

POWERTEC 5 Pack 1/4″-20 5 Star Knobs are perfect for woodworking tools. They work great with shop-built jigs, fences, and feather boards. Each knob is 2 inches wide and 1 inch tall.
These knobs offer a safe, secure grip for easy adjustments. They come in a handy 5-pack, so you always have extras.
The tightly molded metal insert ensures long-lasting durability. Use them on saws, drills, lathes, and routers for smooth control.
| Pros | Cons |
|---|---|
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Perfect For:
These POWERTEC 5 Star Knobs are perfect for woodworkers who need secure, easy-to-use knobs for their shop-built jigs, fences, and featherboards. They’re great for anyone using tools like table saws, routers, or drill presses.
Ready to Purchase?
Buying Guide
Choosing the right 1/4-20 knob size makes your projects easier. This guide helps you pick the best one for your needs.
Factors to Consider When Buying 1/4-20 Knobs:
– Material: Plastic, nylon, or metal knobs offer different benefits. Plastic is lightweight, nylon is durable, and metal is heavy-duty.
– Grip Design: Ergonomic or knurled designs ensure a secure grip. Choose one that feels comfortable in your hand.
– Thread Compatibility: Ensure the knob fits 1/4-20 threads for a perfect match with your tools.
– Durability: Look for premium materials like brass inserts or zinc-plated steel for long-lasting use.
– Application: Consider if the knob is for woodworking, machine tools, or light-duty tasks. Pick one suited for your project.
– Pack Size: Buy in packs of 5, 10, or 30 to save money and have extras on hand.
– Ease of Use: Hand-tighten knobs are convenient. Avoid tools if you prefer quick adjustments.
– Special Features: Some knobs have through holes or hexagon heads for specific needs.
Upgrade your tools with the perfect 1/4-20 knob. Enjoy a smoother, more efficient work experience today!