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Shim discs are essential for achieving precise alignment and leveling in a variety of applications, from plumbing to woodworking. Selecting the correct type and size ensures stability, prevents damage, and guarantees a professional finish. Understanding the key features will help you make an informed decision for your project.
Product size: The product has a hole distance of 44mm, a hole diameter of 5.5mm, an outer diameter of 54.8mm, and a thickness of 6mm. Manual measurements, please allow slight errors.
Applicability: This product is suitable for most mountain bikes.
Product function: This product can be used to optimize the chainring spacing of mountain bikes.
Easy to install: It can be directly replaced without adjustment, with perfect compatibility and high reliability.
Product material: This product is specially designed and made of aluminum alloy, with a long service life and is not easy to damage.
Product size: The product has a hole distance of 44mm, a hole diameter of 5.5mm, an outer diameter of 54.8mm, and a thickness of 2mm. Manual measurements, please allow slight errors.
Applicability: This product is suitable for most mountain bikes.
Product function: This product can be used to optimize the chainring spacing of mountain bikes.
Easy to install: It can be directly replaced without adjustment, with perfect compatibility and high reliability.
Product material: This product is specially designed and made of aluminum alloy, with a long service life and is not easy to damage.
40 PIECES, 4 THICKNESSES: 10 each of 0.1mm, 0.2mm, 0.3mm and 0.5mm. Stack them to reach any gap from 0.1mm up to 1.1mm in 0.1mm steps, so one kit covers the full adjustment range instead of ordering a single size and hoping it fits.
EXACT 6 x 8 mm SIZE: 6mm inner diameter, 8mm outer diameter, fits M6 bolts and shafts. DIN 988 precision shim washers. Measure before ordering, this listing is the 6x8mm size only. Other inner diameters are available in the same range.
STAINLESS STEEL THROUGHOUT: corrosion resistant material, not plated mild steel. Holds up in gearboxes, engine bays and humid workshops without rusting or staining the parts it sits against.
DEBURRED AND FLAT: tight tolerance shim washers with clean, deburred faces that sit flush instead of cocking the part. For bearing preload, end float, pulley alignment and squaring up assemblies where a flat washer is too thick.
BEARING, SPACER AND CALIBRATION WORK: bearing shims and preload on 6mm shafts, M6 bolt spacing, gear and linkage clearance, plus calibration and machine setup where a 0.1mm step is what you need.
【High Quality Material】The metal discs are made of 1077 aluminum alloy, which is wear-resistant, corrosion-resistant and oxidation-resistant, and can be used directly or processed twice.
【Widely Application】Round aluminum sheets are suitable for a variety of uses such as mechanical parts, electronic equipment, model making, craft decoration, etc. They are ideal for industrial production and handcrafted creations.
【Exceptional Workability】Aluminum discs can be easily bent, cut, stamped and welded. Ideal for custom machining while maintaining structural integrity.
【Professional-Grade Finish】Mirror-polished surface requires minimal maintenance - simply wipe with a damp cloth. Ready for immediate use or further finishing like painting/anodizing.
Last update on 2026-08-24 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Shim Discs
Choosing the Right Size and Quantity
Measure the gap you need to fill or the adjustment required before purchasing. It's often beneficial to buy a variety pack of shim discs if you're unsure of the exact thickness needed, as this provides flexibility. Consider the total thickness required; you may need to stack multiple shims to achieve the desired height. Always ensure the shims are compatible with the surrounding materials to avoid damage or premature wear.
Frequently Asked Questions
What is the primary function of shim discs?
Shim discs are primarily used to fill small gaps, adjust alignment, and level components in various mechanical and construction applications. They help ensure parts fit together correctly and operate smoothly.
Are metal or plastic shim discs better?
The choice between metal and plastic depends on the application. Metal shims offer greater strength and durability for load-bearing situations, while plastic shims are lighter, corrosion-resistant, and can provide some vibration dampening.
How do I determine the correct size shim disc?
Measure the gap you need to fill or the amount of adjustment required. Note the inner diameter needed to fit around a bolt or shaft and the outer diameter for surface coverage.
Can I stack multiple shim discs?
Yes, stacking multiple shim discs is a common practice to achieve a greater overall thickness or adjustment. Ensure the stack remains stable and doesn't introduce unwanted movement.
Where are shim discs commonly used?
They are frequently used in construction for leveling doors and windows, in plumbing for aligning pipes, and in automotive mechanics for precise component fitting.
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