Shims are critical precision components used to achieve accurate alignment, spacing, and load distribution in mechanical assemblies. When specified correctly, they prevent premature wear, reduce vibration, and extend the service life of machinery. At Stephens Gaskets, we manufacture and supply a wide range of shims in multiple materials, thicknesses, and formats to support demanding industrial applications.
With over 70 years of experience producing shims, washers, and gaskets, we help engineers and buyers select the right shim for the right job, based on real operating conditions rather than assumptions.
What Is a Shim?
A shim is a thin, precision component used to fill small gaps, correct alignment, or adjust tolerances between mating parts. Shims compensate for manufacturing tolerances, wear, and surface irregularities that cannot be resolved through machining alone.
Correctly specified shims:
- Improve mechanical alignment.
- Prevent component movement and impact damage.
- Reduce vibration and noise.
- Extend equipment service life.
- Reduce maintenance and downtime.
Why Shims Matter in Mechanical Assemblies
Even minor misalignment can cause accelerated wear, overheating, or catastrophic failure. Shims play a critical role in maintaining correct positioning within assemblies, particularly where rotating, load-bearing, or vibrating components are involved.
By using the correct shim material and thickness, engineers can achieve repeatable accuracy without costly rework.
Common Types of Shims
Shims are available in a wide range of materials and formats. The correct choice depends on load, environment, temperature, and required precision.
1. Metal Shims
Metal shims are widely used in high-load and high-temperature environments where strength and dimensional stability are required.
Common metal shim materials include:
- Stainless steel – High strength, excellent corrosion resistance, suitable for harsh and hygienic environments.
- Carbon steel – Strong and durable for general engineering applications.
- Brass – Good corrosion resistance, ideal for marine and electrical environments.
- Copper – Excellent thermal and electrical conductivity.
- Aluminium – Lightweight, corrosion resistant, and easy to machine.
2. Plastic Shims
Plastic shims are used where electrical insulation, corrosion resistance, or lightweight materials are required. They are not suitable for high-temperature or high-load applications but perform well in low-stress environments.
3. Laminated Shims
Laminated shims allow precise thickness adjustment by peeling away layers. They are commonly used during installation, alignment, and maintenance where fine adjustment is required.
4. Shim Washers
Shim washers combine the function of a washer and a shim. They are used around fasteners to control spacing and alignment while distributing load evenly.
Choosing the Right Shim Material
Material selection is critical to shim performance. Factors to consider include:
- Operating temperature.
- Applied load and vibration.
- Exposure to moisture, chemicals, or salt.
- Electrical conductivity or insulation requirements.
- Required thickness tolerance.
For example:
- Stainless steel shims are preferred for high-temperature and corrosive environments.
- Brass shims are suitable for marine and saline conditions.
- Aluminium shims offer a lightweight solution where loads are moderate.
Bespoke Shim Manufacturing
While standard shims suit many applications, complex assemblies often require custom solutions. Stephens Gaskets specialises in bespoke shim manufacturing, producing shims to exact specifications.
We can supply:
- Custom thicknesses and tolerances.
- Precision-cut profiles and shim washers.
- Prototype quantities through to high-volume production.
Our in-house manufacturing capabilities ensure repeatable accuracy and fast turnaround.
Quality Assurance and Manufacturing Expertise
All shims manufactured and supplied by Stephens Gaskets are produced under ISO 9001-certified quality systems. This ensures material traceability, dimensional accuracy, and consistent performance across every order.
Our experience allows us to support customers across engineering, automotive, industrial, and maintenance sectors.
Why Choose Stephens Gaskets for Shims?
Customers choose Stephens Gaskets because we combine material expertise with precision manufacturing.
Working with us gives you:
- One of the UK’s most experienced shim manufacturers.
- Wide material availability from stock.
- Bespoke manufacturing capability.
- Reliable UK-based supply.
- Technical support throughout specification and delivery.
FAQs
1. What are shims used for?
Shims are used to adjust alignment, spacing, and tolerances in mechanical assemblies to prevent wear and ensure correct operation.
2. What material is best for shims?
The best shim material depends on the application. Stainless steel is commonly used for strength and corrosion resistance, while brass, aluminium, or plastic may be used in specific environments.
3. Can Stephens Gaskets manufacture custom shims?
Yes. We manufacture bespoke shims to custom sizes, thicknesses, and materials to meet specific application requirements.
4. Are shims suitable for high-temperature applications?
Metal shims, particularly stainless steel and carbon steel, are suitable for high-temperature environments when correctly specified.
5. How do I request a quote for shims?
To request a quote, contact Stephens Gaskets with your shim material, dimensions, quantities, and application details. Our team will provide a tailored quotation.
Speak to a Shim Specialist
If you need help selecting or manufacturing the right shim for your application, speak directly with Stephens Gaskets.
Our specialists will help you specify a solution that delivers long-term accuracy and reliability.
Contact Our Team
Phone: +44 (0)121 544 5808
Email: sales@stephensgaskets.co.uk to discuss your requirements.
Visit Our Website
Address: Stephens Gaskets Ltd, 19 Hainge Road, Tividale, Oldbury, West Midlands B69 2NR.