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Cap Screws
Cap Screws, also known as Cap Head or Cap Socket Screws, feature a cylindrical head with a hex socket recess to provide high torque for secure fastening. Commonly used in automotive, mechanical and industrial builds, they are ideal where flush, vibration-resistant fittings are essential.
Our range includes hex socket, button head and flange head options in A2/A4 stainless steel, zinc-plated steel and black oxide. These precision-engineered screws are valued for their strength, clean finish and long-term reliability, making them popular in everything from electronics and furniture to motorsport.
Cap Screws can be paired with thread-locking nuts or compounds for even greater stability in high-vibration environments.
Range Features:
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Metric sizes from M3 to M20
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High tensile strength available
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Threaded or smooth shanks
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Durable and corrosion-resistant finishes
Applications:
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Automotive and machinery assemblies
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Engineering and fabrication projects
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Industrial and construction use
Need help choosing the right Cap Screw?
Call our UK-based team today on 01233 713581 – we're ready to assist.
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Frequently Asked Questions
What types of socket head cap screws are there?
We sell three types of stainless steel socket cap screws. These are the popular hex socket cap screws, low head socket cap screws and torx socket cap screws. While all of these styles of stainless steel socket head cap screws have the same cylindrical shaped screw head, they differ by the shape of the recess used to drive the screw. The standard hex style socket are designed to be driven using commonly available tools such as hex wrenches or Allen keys. The low head socket cap screw features a lower profile head when compared to standard socket cap screws. This can be an advantage when space is limited on the fastened application. Torx socket cap screws feature a star-shaped recess instead of the more common hexagonal recess. This can provide better torque transfer when tightening and can be preferred in some situations.
What are socket head cap screws also known as?
There are a few different ways to describe stainless steel socket cap screws. They might more generally be referred to as socket cap screws or socket head cap screws. Some other popular terms include cap head screws, hex socket cap screws and hex cap screws. Most people think of the hex head variety when they think of socket cap screws, however we also sell the torx socket cap screws and low head socket cap screws. These are both available in stainless steel.
What are din912 screws used for?
Din 912 is the DIN standard used to describe the size and shape of the screw. In this case, this translates to socket head cap screws which have a distinctive cylindrical shaped head. Din912 screws are commonly constructed from a range of metals to even some plastics such as nylon. The material that the screw is constructed from will alter its physical properties and the applications which it is suitable for. We sell din912 screws in high quality grades of A2 and A4 stainless steel. This is a premium, high quality material that offers higher strength, better durability and better corrosion resistance than other metals. Din912 screws are commonly used to assemble machinery and equipment in commercial and industrial settings. They are also often used in construction projects to secure structural components and support systems, like steel framing. Fastening engine parts and components inside an automobile is another common use case.
Do socket head cap screws need washers?
Socket head cap screws generally do not require washers but the specific application and the requirements of the project should be considered. For example, factors such as the load distribution, surface protection and the type of materials being fastened will help to determine whether a washer should be used. The corrosion resistance that stainless steel washers provide can be useful in some applications for protecting the joint from the elements and increasing its lifespan. It's important to consider the specific demands of the application when deciding whether to apply washers to socket head cap screws. If you need technical advice regarding this, the team is happy to help, simply get in touch using our contact us form.
What is a socket head cap screw?
A socket head cap screw is a type of fastener that is used to securely join two or more components together. It is distinguished by its specific design, particularly the shape of the screw's head. Socket head caps feature a cylindrical head and there are a few different styles of drive recesses that could be used on the top to fasten it. Today, socket head cap screws are a very popular choice of fastener for a variety of applications across many different industries. They can be manufactured from a wide range of materials, including metals and some plastics. We supply a high grade of stainless steel socket cap screws, these are a premium product that combine excellent strength and durability with fantastic resistance to rusting.
How fast can I get my order?
Need your parts tomorrow? Our rapid same day dispatch has got you covered! Simply place your order before 4pm Mon-Thurs or 2pm Friday and select our Next Day Delivery service in the shopping cart. We also offer Guaranteed AM delivery when required, in addition to a Saturday delivery option.
If you don't mind waiting, we have a Free delivery method for orders over £30, and an economic £4.85 2nd Class delivery for orders between £20-£30.
Can I get a Free Sample?
Free Samples can be requested through our product pages, displayed in the sizing table beside the product you require. Please note you can always give us a call on 01233 713 581 or contact us on Live Chat to discuss samples.
Do I need to Sign Up for an account?
You do not need to sign up to place an order, but it is recommended if you'd like to gain loyalty points, giving discount off future orders. To learn more about loyalty points, please view our rewards scheme page.
I am not sure what parts I need?
If you're unsure which part you need then please do not hesitate to give one of our friendly Sales Team a call on 01233 713 581 and they can assist you. Alternatively, we're active on Live Chat during office hours. You can open this using the button in the bottom right corner of the website. Alternatively, you can write to us using our contact form.
Do you offer Returns on Products?
We offer a return period on all of our products to give you peace of mind, to view our policies and learn more about this process should it be required, please see our returns policy page.
Can you supply different colours of this product?
In most cases we have the facilities to offer you different colours of a product, specific to your requirements. Minimum order quantities may apply depending on the manufacturing technique in question, but please get in touch with any queries you may have.
Is there a minimum order value?
Please note that there is a minimum order value of £10 through our website (inclusive of VAT).
If you're new to our website you may want to check out our frequently asked questions section for answers to common customer queries.
What do these abbrievations mean?
While browsing the website you may come across abbreviations used for material names that you are unfamiliar with. You can find an explanation for these in our material abbreviations guide.
