Imperial Bolts

Are you looking for imperial bolts for your project? Need only the best supplies from reputable fastener experts? Here at GSS Fasteners, our team are reliable fastener suppliers who have been offering a range of high-quality imperial bolts – and imperial nut counterparts – to our customers for many years.

Imperial bolts are bolts with measurements in inches and fractions of inches, as opposed to metric measurements. These sturdy bolts come in many sizes, thread pitches, and materials, making them a versatile tool for any fastening job – be it wood, metal, or even something more exotic. These bolts are not just any ordinary hardware; they are graded and standardised, ensuring that they meet the standards set by various organisations.

If you want to know more or to arrange an order of your own stainless steel, fully threaded imperial bolts, get in touch with us now!

Imperial Bolt Sizes

Imperial bolt sizes, a fundamental aspect of the product range at GSS Fasteners Ltd, encompass a wide array of dimensions and specifications tailored to suit diverse applications across various industries. These bolts are sized using the Imperial measurement system, which is based on inches and fractions of an inch, offering a distinct sizing approach compared to the metric system. The size of an imperial bolt is typically expressed through two key dimensions: the diameter and the length. The diameter refers to the thickness of the bolt’s shank and is usually denoted in fractions of an inch, such as 1/4″, 1/2″, or 3/8″. This measurement is crucial as it determines the bolt’s compatibility with the corresponding nut or tapped hole. The length of the bolt, also measured in inches, indicates the distance from under the head to the end of the shank, defining how deep the bolt can penetrate and fasten the materials.

Another critical aspect of imperial bolt sizes is the thread count or threads per inch (TPI), which signifies the number of thread peaks in a one-inch length. A higher TPI means finer threads, offering greater precision and strength in fastening, especially in applications where vibration is a concern. GSS Fasteners Ltd provides a comprehensive range of imperial bolt sizes, catering to standard dimensions as well as custom requirements, ensuring versatility and precision in fastening solutions. From small-scale projects to large industrial applications, the variety in sizes, coupled with the quality and durability of the materials used, makes these bolts a reliable choice for clients seeking effective and efficient fastening solutions.

Imperial Bolts: The Backbone of Robust Constructions

At GSS Fasteners, our commitment to excellence and innovation in the fastening industry has been unwavering. We understand the critical role that fasteners play in various industries, holding together everything from small machines to large structural frameworks. Among our extensive product range, imperial bolts stand out for their versatility, reliability, and adherence to traditional measurement standards. This dedication to quality ensures that our clients receive only the best solutions for their projects.

The Importance of Imperial Bolts in Various Industries

Imperial bolts, characterised by their measurements in inches, have been a staple in construction, automotive, aerospace, and manufacturing industries for decades. Their universal application and the familiarity within these sectors make them an indispensable component of our product line. The strength and durability of these bolts are paramount, whether they are used in building infrastructure or in the assembly of machinery.

Our team at GSS Fasteners takes pride in our comprehensive range of imperial bolts, designed to meet the diverse needs of our clients. We understand that each project has unique requirements and challenges, which is why we offer bolts in various sizes, materials, and grades. From stainless steel to alloy materials, our bolts are engineered to withstand the toughest environments and the most demanding applications.

What Are Imperial Fasteners?

Imperial bolts are a type of fastener that are measured in inches and fractions of inches, as opposed to the more widely used metric measurements. These bolts come in various types such as hex bolts and carriage bolts, each with their unique characteristics and uses.

Hex bolts, also known as hex cap screws, have a hexagonal head and are typically used for fastening wood and metal. They have a threaded section that screws into the material being fastened, and an unthreaded section below the head that acts as a shoulder, providing added strength to the connection.

Carriage bolts, on the other hand, have a rounded head and are typically used for fastening wood. They also have a threaded section, but it is located under the head, which is designed to sit flush against the surface of the material being fastened. This provides a smooth, finished look and added security.

Both hex bolts and carriage bolts come in a range of sizes, with diameters ranging from 1/4 inch to 1 inch and lengths ranging from 1/2 inch to 12 inches. They can be made from a variety of materials such as aluminium, titanium and steel, depending on the application and strength requirements.

It is also important to note that when using these bolts, it is recommended to use washers to distribute the load and prevent damage to the material being fastened. Another important component to consider is the bolt’s head, as it can vary in shape, size and material; it also affects the way the bolt is tightened and secured. These bolts are used in a variety of applications, including:


Imperial bolts are used in the construction of buildings, bridges, and other structures to secure wood, metal, and other materials. They are also used to fasten beams, rafters, and other structural elements. The use of imperial bolts in construction ensures that the structures are stable, secure and safe.


Imperial bolts are used in the automotive industry to fasten parts such as engines, transmissions, and suspension systems. They also secure wheels, brakes, and other mechanical components. Using imperial bolts in the automotive industry ensures that vehicles are safe and reliable.


Imperial bolts are used in the manufacturing and assembly of machinery and equipment. They are used to secure gears, pulleys, and other moving parts. Using imperial bolts in machinery ensures that the equipment is safe and efficient to operate.


Imperial bolts are used to fasten furniture such as chairs, tables, and desks. They are also used to secure bed frames and other bedroom furniture. The use of imperial bolts in furniture ensures that the pieces are stable and durable.

Outdoor Equipment

Imperial bolts are used to secure outdoor equipment such as playground equipment, decks, and fences. They also secure patio furniture, umbrellas, and other outdoor accessories. The use of imperial bolts in outdoor equipment ensures that the equipment is stable and safe to use.


Imperial bolts are used in industrial applications such as oil and gas, mining, and chemical processing. They are used to secure machinery and equipment in these industries. The use of imperial bolts in industrial applications ensures that the equipment is safe and reliable.

DIY Projects

Imperial bolts are widely used in DIY projects around the house, such as building shelves, installing hardware, and attaching fixtures. The use of imperial bolts in DIY projects ensures that the projects are stable and secure.

The Evolution of Imperial Bolts

Over the years, the design and manufacturing of imperial bolts have evolved significantly. With advances in technology and materials science, our team has been at the forefront of adopting innovative practices to enhance the performance and longevity of our products. We continuously invest in research and development to ensure that our imperial bolts meet the highest standards of quality and efficiency.

One of the key advancements has been the introduction of corrosion-resistant coatings and treatments, which extend the life of our bolts even in harsh environments. This is particularly important in industries such as marine engineering and construction, where materials are regularly exposed to moisture and corrosive substances.

Custom Solutions and Expertise

At GSS Fasteners, we understand that off-the-shelf solutions do not always meet the specific needs of every project. That’s why we offer custom-designed imperial bolts, tailored to the exact specifications and requirements of our clients. Our experienced engineers work closely with customers to develop bespoke solutions that ensure optimal performance and fit.

Our commitment to customer service extends beyond just providing products. We offer expert advice and support throughout the selection, installation, and maintenance processes. Our team is always on hand to answer questions, solve problems, and assist with any challenges that may arise during the application of our imperial bolts.

Sustainability and Responsibility

In today’s world, it is not enough to simply provide high-quality products. Sustainability and ethical responsibility are at the core of our business practices at GSS Fasteners. We are committed to reducing our environmental impact and promoting sustainable practices throughout our operations and supply chain.

This commitment includes sourcing materials responsibly, minimising waste during production, and implementing energy-efficient processes. By choosing GSS Fasteners, our clients can be confident that they are partnering with a company that values not only the quality and performance of its products but also the well-being of our planet.

As we continue to grow and evolve, our dedication to providing top-quality imperial bolts remains steadfast. We are constantly exploring new ways to improve our products and services, ensuring that we remain at the forefront of the fastening industry. Whether you are working on a small-scale project or a large construction project, you can trust GSS Fasteners to provide the solutions you need to succeed.

Why Choose Us For Imperial Bolts?

In a market that’s as vast and varied as that of fasteners, finding a reliable supplier for imperial bolts can be a significant challenge. Our company stands out as the premier choice for sourcing imperial bolts, offering unmatched expertise, quality, and service. Here’s why choosing us for your imperial bolt needs is a decision you can make with confidence.

Unparalleled Quality and Reliability

At the core of our operations is a commitment to quality that is second to none. We understand that the integrity of your projects depends on the reliability of the components you use. That’s why we source our imperial bolts from the finest materials, ensuring they meet rigorous standards of strength, durability, and corrosion resistance. Our quality assurance processes are thorough and meticulous, involving multiple stages of inspection to guarantee that every bolt we supply performs to your expectations.

Extensive Range and Customisation Options

Whether you’re working on a classic automotive restoration, maintaining industrial machinery, or undertaking a unique construction project, our extensive inventory of imperial bolts is designed to meet your diverse needs. Beyond our wide range of standard sizes and materials, we offer customisation options to cater to specific requirements. Our team works closely with clients to produce custom-designed imperial bolts that perfectly match the specifications of their projects, no matter how complex.

Expertise and Technical Support

Our expertise in imperial fasteners sets us apart. With years of experience in the industry, our knowledgeable team is well-equipped to offer technical support and advice, helping you select the right bolts for your application. We understand the nuances of working with imperial measurements and can guide you through choosing the most appropriate materials, sizes, and finishes. Our aim is to not just supply fasteners but to be a valuable partner in your project’s success.

Prompt and Reliable Service

We pride ourselves on our customer service, which is geared towards providing a seamless and hassle-free experience. Our efficient order processing, inventory management, and logistics systems ensure prompt delivery of your imperial bolts, minimising downtime and keeping your projects on track. Our customer service team is always on hand to assist with any queries or issues, demonstrating our commitment to your satisfaction.

Competitive Pricing

While we never compromise on quality, we understand the importance of cost-effectiveness for our clients. Our competitive pricing model is designed to offer you the best value for your investment in imperial bolts. By leveraging efficient operations and strong relationships with suppliers, we’re able to keep our prices fair, ensuring you don’t have to break the bank to get the high-quality fasteners you need.

Choosing us for your imperial bolt needs means partnering with a supplier that truly understands the importance of every detail in your projects. We are dedicated to delivering excellence, supporting your technical requirements, and ensuring that every bolt we supply contributes to the success and longevity of your endeavours.

Contact GSS Fasteners for Imperial Bolts Today!

Here at GSS Fasteners, we provide a range of high-quality nuts and bolts to our customers in the UK, and we offer imperial bolts that are strong, durable, and reliable! Get in touch with us now for more information! We’re only a phone call away, and can’t wait to hear from you!

Are you looking for something else? We also offer pal nuts, shear nuts, structural nuts, penny washers, taper washers, shakeproof washers, square head coachscrews, and more! We’re sure to have exactly what you need!

Frequently Asked Questions

What are threaded sections in imperial bolts and how are they different?

Threaded sections in imperial bolts, a specialty of GSS Fasteners Ltd, are crucial components that distinguish them from other types of fasteners. These sections consist of helical ridges, known as threads, wrapped around the cylindrical body of the bolt. The thread’s primary function is to provide a mechanism for the bolt to secure two or more components together. In imperial bolts, these threads are defined by the Imperial measurement system, characterised by measurements in inches and threads per inch (TPI). Imperial bolts, unlike their metric counterparts, adhere to standards set forth by institutions like ANSI in the United States. The threaded sections vary in diameter and pitch, which is the distance between adjacent threads. This variation is significant because it determines the bolt’s compatibility with nuts or tapped holes.

The distinction in threading also impacts the bolt’s strength and load-bearing capacity. Moreover, the threading type can be either coarse or fine, with fine threads offering higher tensile strength and better resistance to loosening, while coarse threads are more durable and easier to handle in challenging environments. In differentiating threaded sections, it’s essential to consider the application’s specific requirements. For example, in environments where vibration is a concern, fine-threaded bolts may be preferred due to their better grip. GSS Fasteners Ltd offers a wide range of imperial bolts with various thread types to suit diverse applications, ensuring optimal performance and reliability.

How do I choose the right imperial bolts for my next project?

Selecting the right imperial bolts for a project requires careful consideration of several factors. At GSS Fasteners Ltd, we recommend considering the material composition of the bolt first. Common materials include carbon steel, stainless steel, and alloy steel, each offering different levels of strength, corrosion resistance, and suitability for specific environments. For instance, stainless steel bolts are ideal for outdoor or corrosive environments due to their rust resistance. Next, determine the appropriate size and length of the bolt, which depends on the thickness of the materials being fastened and the type of load they will bear. The size and length are critical for ensuring the bolt can handle the required stress without failure. Moreover, the thread type and pitch should align with the corresponding nuts or tapped holes. An incorrect match can lead to joint failure or difficulty in assembly.

Consider the bolt’s grade, which indicates its strength and is particularly crucial in high-stress applications. Higher grade bolts can handle more tension and are necessary for heavy-duty applications. Also, assess environmental factors such as temperature, exposure to chemicals, and moisture, as these can affect the bolt’s performance. Lastly, it’s essential to understand the specific requirements of your application. For projects involving dynamic loads or vibrations, choosing bolts with locking mechanisms or fine threads might be preferable. Consulting with experts at GSS Fasteners Ltd or referring to industry standards can further guide you in selecting the most appropriate bolts for your project, ensuring safety, reliability, and longevity.

Can I use a screw instead of an imperial bolt for my project?

Deciding between using a screw or an imperial bolt for a project depends on several factors related to the specific application. Screws and bolts, while similar in their fastening function, have distinct characteristics and uses. At GSS Fasteners Ltd, we recommend considering the nature of the materials to be fastened and the type of load they will bear. Screws are typically used for directly fastening materials together without the need for a nut. They are designed to create their own threads in the material, making them ideal for wood, plastic, or metal sheets. Screws offer a range of head types and drive styles, allowing for versatility in applications where space is limited or a flush surface finish is desired. They are also preferable for applications requiring frequent assembly and disassembly. On the other hand, imperial bolts, characterised by their specific threading and measurement standards, are designed to be used with nuts. This makes them more suitable for applications requiring stronger and more secure fastening, particularly where shear and tensile loads are significant.

Bolts provide the advantage of distributing load across a wider area, making them ideal for heavy-duty applications in construction, automotive, and machinery. In scenarios where you need a fastener that can be easily adjusted, removed, or if a higher load-bearing capacity is required, an imperial bolt is likely the better choice. However, for projects that require direct engagement with the material, especially in softer materials or where a smooth finish is needed, a screw would be more appropriate. Ultimately, the decision to use a screw or a bolt should be based on the specific requirements of your project, including the materials involved, the type of load, the environmental conditions, and the need for future adjustments or disassembly. GSS Fasteners Ltd offers a wide range of both screws and bolts, allowing customers to choose the most suitable fastening solution for their needs.

What are the benefits of using stainless steel fasteners in construction projects?

Stainless steel fasteners, a key product range at GSS Fasteners Ltd, offer several significant benefits for construction projects. Firstly, their exceptional corrosion resistance makes them ideal for use in harsh environments, such as coastal areas or industrial settings where they may be exposed to chemicals. This resistance is primarily due to the chromium content in stainless steel, which forms a passive layer of chromium oxide on the surface, protecting the metal from rust and corrosion. Another advantage is their strength and durability. Stainless steel fasteners maintain their integrity and mechanical properties even under extreme temperatures and conditions. This makes them suitable for projects that require long-lasting, reliable fastening solutions. Moreover, stainless steel fasteners resist staining and maintain their aesthetic appearance over time, which is crucial for visible applications where appearance is as important as functionality.

Additionally, these fasteners offer a high degree of versatility and can be used in a wide range of construction materials, including wood, metal, and concrete. They are available in various grades, each tailored for specific environments and applications. For instance, Grade 316 stainless steel is often used in marine environments due to its enhanced corrosion resistance. Environmental sustainability is another aspect where stainless steel fasteners stand out. They are 100% recyclable, reducing the environmental impact and contributing to sustainable construction practices. The long life span of these fasteners also means reduced need for replacement, further diminishing environmental footprints.

How does GSS Fasteners Ltd ensure the quality of its fasteners?

At GSS Fasteners Ltd, quality assurance is a cornerstone of our operations, and we employ several rigorous measures to ensure the highest quality in our fasteners. Firstly, we adhere to strict industry standards and regulations, ensuring our products meet or exceed the required specifications. This compliance is crucial for ensuring safety, reliability, and performance in the various industries we serve. Our quality assurance process begins with the selection of raw materials. We source high-grade materials and conduct thorough inspections to ensure they meet our strict quality criteria. During the manufacturing process, we employ state-of-the-art technology and machinery, which allows for precise and consistent production. Our skilled technicians closely monitor every stage of the manufacturing process, from initial design to final product, ensuring each fastener is crafted to perfection.

We also implement rigorous testing procedures to assess the strength, durability, and corrosion resistance of our fasteners. This testing includes both in-house and independent laboratory testing, ensuring an unbiased evaluation of our products. Regular audits and inspections are part of our quality control process, helping us identify and rectify any potential issues promptly. Additionally, we believe in continuous improvement and regularly update our processes and technology based on feedback and advances in the industry. Training and development of our workforce are also integral to our quality assurance strategy, ensuring our team is skilled and knowledgeable about the latest industry standards and practices.