Best Round Shims of 2025

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Round shims are versatile and essential tools used in a wide range of industries and applications. These small, circular pieces of material are designed to fill gaps and provide precise alignment between two objects. Made from various materials such as stainless steel, brass, or plastic, round shims offer excellent durability and corrosion resistance. They are commonly used in automotive, aerospace, and manufacturing industries to ensure proper alignment, prevent wear, and reduce noise and vibration. With their compact size and easy installation, round shims are a reliable solution for achieving accurate and precise alignment in countless applications.
At a Glance: Our Top Picks
Top 10 Round Shims
Steel Arbor Shim Assortment Kit
The Small Parts Arbor Shim Kit is a versatile assortment of steel shims designed for keyed applications. Made of high-quality, low carbon, cold-rolled steel, these shims are available in 19 different thicknesses ranging from 0.001" to 0.125". With the Small Parts Arbor Shim Kit, you can easily adjust the spacing between components, saving time and eliminating the need for re-machining. The shims are packaged in an airtight poly bag, ensuring that they remain in optimal condition until you are ready to use them. Whether you are a professional or a DIY enthusiast, this kit is a must-have for any project that requires precision and flexibility.
Steel Shim Assortment Kit by Small Parts
The Small Parts Steel Shims offer a comprehensive assortment of thicknesses, ranging from 0.001" to 0.125". This variety allows you to select the perfect shim for your specific needs, saving you time and effort compared to re-machining. Made from high-quality, low carbon, cold rolled steel, these shims ensure durability and reliability in your projects. Additionally, their design as arbor spacers without keyways makes them ideal for a range of keyed applications. Packaged in an airtight poly bag, they stay protected until you need them, ensuring you have the right shim on hand whenever required.
Steel Arbor Shim Assortment Kit
The Small Parts Shim Kit is a versatile assortment of steel arbor shims that are perfect for various applications. The kit includes 19 shims, each with a different thickness ranging from 0.001" to 0.125". Made of high-quality, low carbon, cold rolled steel, these shims are durable and reliable. They are designed for keyed applications, making them ideal for use in machinery and equipment. With this kit, you can easily adjust and align parts, saving you time and effort compared to re-machining. The shims are packaged in an airtight poly bag, ensuring they stay in excellent condition until you need them. Whether you're a professional or a DIY enthusiast, the Small Parts Shim Kit is a must-have tool for your workshop.
Small Parts Steel Arbor Shim Kit
The Small Parts Shim Assortment is a versatile kit that includes 19 shims of varying thicknesses, ranging from 0.001" to 0.125". Made from high-quality, low carbon steel, these shims are designed for keyed applications, providing a reliable solution without keyways. By using these arbor spacers, you can save time and effort that would otherwise be spent on re-machining. Each shim comes packaged in an airtight poly bag, ensuring they remain in excellent condition for your projects. This assortment is perfect for anyone needing precise adjustments in their mechanical applications.
Steel Shim Assortment Kit by Small Parts
The Small Parts Shim Kit offers a comprehensive selection of thicknesses, allowing you to find the perfect fit for your needs. With 19 different sizes ranging from 0.001" to 0.125", you can easily make precise adjustments in keyed applications without the hassle of re-machining. Made from high-quality, low carbon steel, these shims ensure durability and reliability. Additionally, the airtight packaging keeps your shims protected and ready for use whenever you need them, saving you time and effort in the long run.
Small Parts Steel Shim, 0.010" Thickness
The Small Parts Steel Shim is crafted from high-quality, low carbon, cold rolled steel, ensuring durability and reliability. These shims are designed to save you time by eliminating the need for re-machining, allowing for quick and efficient adjustments in your projects. With precision thicknesses, you can achieve more accurate results, giving you confidence in your work. Additionally, the shims come packaged in an airtight poly bag, helping to maintain their quality and protect them from damage. This makes them a convenient choice for various applications.
Steel Arbor Shim Assortment Kit by Small Parts
The Small Parts Shim Assortment is a versatile kit that includes various thicknesses ranging from 0.001" to 0.125". This assortment allows you to easily find the right shim for your keyed applications without the hassle of re-machining. Made from high-quality, low carbon steel, these shims are durable and reliable. The airtight packaging ensures that your shims remain in pristine condition, ready for use whenever you need them. With this kit, you can save time and effort while achieving precise adjustments in your projects.
Small Parts Steel Round Shim
The Small Parts Steel Round Shim, also known as the Small Parts Shim, is a high-quality shim made of low carbon, cold-rolled steel. With its matte finish and full hard temper, this shim offers precision thicknesses for more accurate results. It is packaged in an airtight poly bag, ensuring its quality is preserved. This shim is designed to be used as an arbor spacer, saving time over re-machining. The absence of keyways in the arbor shims makes them suitable for keyed applications. Whether you need to adjust the height of a machine component or ensure a precise fit, the Small Parts Shim is a reliable tool that will help you achieve your desired results efficiently.
Precision Brand Spring Steel Shim Set
The Precision Shim Assortment comes with 270 round shortening shims in various sizes, designed to meet your precise needs. Each shim is die-cut for a snug fit around shoulder screw shanks, allowing you to adjust the shoulder length easily. Made from spring steel, these shims offer the perfect blend of flexibility and strength, ensuring they can withstand pressure while maintaining their shape. Plus, they come in a convenient compartmented plastic case, helping you organize your tools efficiently and find the right shim quickly when you need it.
Steel Arbor Shim Kit, Small Parts
The Small Parts Shim Assortment is a versatile kit that includes various thicknesses ranging from 0.001" to 0.125". Each shim is made from high-quality, low carbon steel, ensuring durability and reliability for your projects. These arbor spacers are ideal for keyed applications, providing precise adjustments without the need for re-machining. Plus, the airtight poly bag packaging keeps your shims organized and protected, making it easy for you to find the right size when you need it.
Frequently Asked Questions (FAQs)
1. What are ring shims used for?
Ring shims are used in shim stacks to achieve preload. They are paired with a thinner centering shim to maintain their position. The difference in thickness between the ring shim and the centering shim determines the amount of preload in the stack.
2. What are arbor shims used for?
Arbor shims are used for precise spacing in machinery such as milling cutters, saws, and grinding tools. They help ensure accurate alignment and performance of the machinery.
3. What are the different types of shims?
There are various types of shims, including arbor shims, variable shims, slotted shims, shim rings, and shim stock. Each type serves a specific purpose and offers unique advantages for different applications. They are all used to compensate for tolerances and achieve proper fit and alignment.
4. What are the benefits of shims?
Shims provide several benefits, such as filling gaps or spaces between objects, supporting and adjusting for a better fit, and providing a level surface. They are commonly used to ensure proper alignment, compensate for tolerances, and improve the performance of various components and machinery.
5. How do I know what size shims I need?
To determine the size of shims needed, you can use the equation: New shim size = (measured valve clearance – specified valve clearance) + old shim size. This calculation helps determine the appropriate shim size for achieving the desired clearance.
6. Are plastic shims better than wood?
Plastic shims have advantages over wood shims. They require less shaping, are available in consistent shapes and thicknesses, and have consistent material properties. Plastic shims are also stronger, more durable, lighter, and more cost-effective compared to wood shims.
During our round shim research, we found 24 round shim products and shortlisted 10 quality products. We collected and analyzed 3,201 customer reviews through our big data system to write the round shims list. We found that most customers choose round shims with an average price of $18.64.
The round shims are available for purchase. We have researched hundreds of brands and picked the top brands of round shims, including Small Parts, Precision Brand. The seller of top 1 product has received honest feedback from 1,260 consumers with an average rating of 4.7.

Brian Howie is a content writer and senior industrial designer. After graduation from Westminster College, he has been engaged in product design and manufacturing for 18 years. Brian Howie has always found great pleasure in designing industrial products and sharing his ideas and experience online.