The Benefits of Coatings on Huck LockBolts

The Benefits of Coatings on Huck® LockBolts®

By Howmet Fastening Systems Industrial

Enhancing Security and Longevity

The Huck® LockBolt® (also known as HuckBolt®) is renowned for its strength and reliability and are a reliable solution for joining materials in a multitude of industries. These fasteners offer a unique combination of strength, reliability, and security, making them indispensable in applications ranging from automotive to construction (find out about 'how LockBolts work' by clicking this link).

To enhance their performance and longevity, coatings play a pivotal role. Coatings provide a layer of protection, offering numerous benefits that contribute to the overall effectiveness of the joint, including:

  • Corrosion resistance
  • Enhanced security
  • Improved aesthetics

Types of Coating

A common first line of defence against corrosion is zinc electroplating. This process creates a thin, adherent layer of zinc on the metal surface. However, for additional protection or specific aesthetic requirements, organic coatings can be used, either by themselves or over electroplate. Selecting the right combination of electroplate and organic coating depends on the specific application's environmental demands and desired finish.

Corrosion Resistance

One of the primary advantages of applying coatings to LockBolts® is for corrosion resistance. Huck® LockBolts® are perfect for safety-critical applications, and this means they are often subjected to harsh environmental conditions, including moisture, saltwater exposure, and chemical agents. Without proper protection, these conditions can lead to corrosion, compromising the integrity of the fasteners and jeopardising the structural stability of the application.

Coatings act as a barrier, shielding the LockBolts® from corrosive elements and preventing the onset of rust and degradation. By effectively sealing the surface of the fasteners, coatings significantly extend their lifespan, reducing maintenance requirements and replacement costs over time. This is particularly crucial in industries such as marine, offshore, and transportation, where corrosion can pose significant safety risks.

Two collars showing the difference in corrosion after three weeks of salt spray on coated and uncoated surfaces.

Enhanced Security

Security is paramount in many industries, particularly those involving critical infrastructure, transportation, and defence. Huck® LockBolts® offer exceptional joint integrity, vibration resistance and tamper-proofing. The right choice of coating ensures that the connection holds securely under the harshest conditions.

Improved Aesthetics

Applying coatings to LockBolts® can also transform the look of the LockBolt®. Coatings can offer the possibility of colour customisation – allowing the matching of the LockBolt® to the surrounding structure which is particularly beneficial for architectural applications where exposed fasteners are unavoidable. Colour customisation can also assist with camouflaging the LockBolt®, making them virtually invisible and blending seamlessly with the surrounding material. This creates a clean and uncluttered aesthetic, particularly valuable for design-sensitive projects.

Huck® Recommends

For applications in harsh environments, Huck® recommends the BobTail® fastener paired with J43, J44, J45, J46, J57, J58 or J68 coatings. Unlike competitor LockBolts®, BobTail® features a pintail-less design that eliminates the risk of corrosion associated with pin-break after installation, providing superior durability and long-term performance even in the most demanding conditions.


In conclusion, applying coatings to Huck® LockBolts® offers a multitude of benefits. Not only do they significantly enhance corrosion resistance, crucial for applications in harsh environments, but they can also improve security and aesthetics.

With a variety of coating options available, Huck® LockBolts® can be tailored to meet the specific needs of each project, ensuring both optimal function and a desired finish. Have a look at our Huck Markets page by clicking this link.

 For more information call us on +44(0)115 932 4939, email or follow this link to use our secure contact us form.

Article reposted:,10R13,U81DF,456U0,1


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