Truss Head Screws
Truss Head Screws, which are also known as Mushroom Head Screws, are a popular choice where you need a wide low-profile head for improved load distribution and a neat finished appearance across sheet materials, plastics and thin section assemblies.
Truss Head Screws are machine screws with a wide, rounded head that sits low against the surface. This is why they are often referred to as mushroom head screws, due to the distinctive mushroom shaped head design. This wider head spreads the clamping force over a larger area which helps reduce pull-through on softer materials and thin plates. They are commonly specified for panel fixing, electrical enclosures, signage and general assembly where a smooth low snag head is preferred.
We provide a range of Truss Head Screws in both A2 and A4 Stainless Steel; providing strength and durability to a vast array of projects. A2 Stainless Steel offers very good corrosion resistance in typical indoor and outdoor environments, along with excellent formability and weldability, making it a popular choice for everyday fixings, brackets, enclosures and equipment used away from aggressive conditions. A4 Stainless Steel provides enhanced corrosion resistance, particularly against chlorides, salt and many chemicals, so it is preferred for coastal and marine locations, swimming pool areas and external fixings exposed to de-icing salts where longer service life and improved durability are required.
Key Features:
- Wide low-profile head for increased bearing surface
- Helps prevent pull-through on plastics, sheet metal and timber panels
- Neat low snag finish for visible fixings and user-facing panels
- Suitable for use with washers where extra load spread is required
- Commonly paired with machine threads and captive nuts or threaded inserts
Truss Head Screws can be supplied with different drive types including slotted and cross slot so you can choose the best option for your application. Slot head options suit restoration work, traditional fittings and lower torque applications. Cross slot options are typically preferred for production assembly and maintenance where quicker driving and more consistent engagement is needed.
Slot Head Machine Screws
Slot Head Machine Screws are recognised by their straight line drive. They are widely used in traditional fittings, electrical components and older equipment where slotted fasteners are a standard. They are best suited to controlled hand assembly as the driver can slip out under higher torque.
Cross Slot Head Machine Screws
Cross Slot Head Machine Screws offer more positive engagement than a slotted drive which makes them a practical choice for faster assembly lines and general maintenance. They are often selected where repeatability and ease of installation are important especially when using powered drivers with controlled torque settings.
Key Applications and Industries
These fasteners are used across manufacturing, maintenance and construction in the UK where consistent clamping and a clean finish are required. Truss Head Screws, which are also known as Mushroom Head Screws, are commonly used for enclosure panels, control cabinets, signage and plastic housings. Slot head machine screws are often used in refurbishment, electrical fittings and heritage projects where a traditional appearance is preferred. Cross slot head machine screws are ideal for general assembly, panel fixing and equipment servicing where quicker installation is needed.
Our Truss Head Screws are ideal for:
- Thin sheet assemblies requiring increased head bearing area
- Plastic housings where pull-through resistance is important
- Panels and covers where a low snag head improves safety and appearance
- General machine screw fixing into tapped holes or threaded inserts
Benefits:
- Improved load spread reduces surface damage and pull-through risk
- Low-profile rounded head delivers a clean professional finish
- Choice of drive type supports both traditional and high-speed assembly
- Versatile for use in metal, plastic and composite panel applications
- Reliable clamping for enclosures, panels and general equipment builds
If you need assistance selecting the Correct Truss Head Screw for your project or would like to discuss custom options, contact our expert team at 01233 713581.
Frequently Asked Questions
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.
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.
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.
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.
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.
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.
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.
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.