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Screws

Screws are essential for a huge range of DIY projects and are designed to fasten together a variety of different materials. There are many different types of screw available, each with unique benefits, so it is important to choose the right one. For a variety of construction and DIY projects, choose from <a href="/departments/hardware/screws/DIY580655.cat?Length+%28mm%29=100">100mm screws</a> and <a href="/departments/hardware/screws/DIY580655.cat?Length+%28mm%29=150">150mm screws</a> to ensure strong, secure fixings. Our range covers all the essential screw types in various colours, materials, lengths, diameters, and drive types to help get your next project complete.

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By Material

Selecting the right screws starts with understanding the surface or material you’re fixing into. Different materials require different thread designs, coatings and finishes to ensure a secure hold, reduce splitting and improve long‑term durability. Filtering fixings by material is one of the easiest ways to narrow down the best option for your project. For timber projects such as framing, shelving or general joinery, our range of wood screws offers dependable grip and clean fixing. If you’re working with engineered boards, chipboard screws are designed to prevent cracking while maintaining strong pull‑out resistance. Harder surfaces need specialist solutions. Our concrete screws are engineered for masonry applications, providing secure anchoring without the need for wall plugs in many cases. For internal construction, we stock purpose‑built plasterboard screws and drywall screws, ideal for stud walls, ceilings and renovation work.

Material choice also affects appearance and corrosion resistance. Choose from durable steel screws for strength, or decorative finishes such as brass screws and lightweight aluminium screws. For specialist applications, plastic screws provide non‑conductive and corrosion‑free fastening. To match your project visually, browse popular colour finishes including black screws and  white screws , ideal for visible fixings where appearance matters as much as performance. By choosing screws based on material and suitability, you’ll find fixings that install more easily, hold more securely and deliver a cleaner, longer‑lasting result.

By Type

Screws are manufactured in a wide variety of designs, each suited to a specific task, fixing method or load requirement. Choosing the correct screw type helps improve grip, reduces the risk of stripping during installation and delivers a more secure, professional finish. Whether you are completing structural work, assembling furniture or carrying out everyday DIY, filtering fixings by type is a practical way to narrow down the right option. For heavy‑duty and construction projects, robust fixings such as coach screws are commonly used for timber framing, fencing and landscaping. Outdoor projects benefit from specialist decking screws, designed to withstand exposure to moisture, while roofing screws provide secure fixing for sheet materials and roofing applications.

For precision work and mechanical assemblies, browse engineered machine screws and socket screws, both ideal for furniture, appliances and metal components. Smaller fixings such as grub screws are often used for securing handles, knobs and concealed fittings, while double ended screws are useful for joining two materials without visible heads. Drive type also plays an important role in ease of installation. Many installers prefer Pozidriv screws or hex screws for improved torque control and reduced cam‑out. Traditional Phillips screws remain a popular choice for general purpose and light‑duty applications. By choosing screws based on type and drive style, you can match fixings to your tools, materials and project requirements, helping to achieve a stronger and more reliable result.

By Size

Selecting the correct screw size is essential for achieving a strong, secure and long‑lasting fixing. Both diameter and length play a key role in how well a screw performs, helping to prevent material damage, improve load‑bearing strength and ensure a clean installation. Filtering fixings by size allows you to match screws more precisely to your materials and project requirements. Metric bolt sizes are widely used across DIY, furniture assembly and trade applications. Smaller options such as M3 screws and M4 screws are commonly used for light‑duty assemblies and fixtures. For increased strength, M5 screws and M6 screws are popular for furniture construction and general building work, while M8 screws offer greater load‑bearing capacity for heavier applications. Some projects require a specific screw type within a particular size range. Precision installations often use M4 machine screws or M6 machine screws, which are designed for accurate alignment with nuts or threaded components. Structural timber projects may require larger fixings such as M10 coach screws, offering strong fixing for framing and landscaping work.

Length is just as important as diameter when selecting fixings. Popular options such as 100mm screws are suitable for general construction, while longer 150mm screws provide deeper penetration for thicker materials. Where both diameter and length matter, compact fixings like M4 10mm screws are ideal for tight assemblies, while M6 40mm screws are commonly used for stronger timber joints. By filtering screws by bolt size, type and length, you can confidently choose fixings that suit your tools, materials and project requirements for a secure and professional finish.

By Brand

Choosing screws by brand can help you find fixings that match your expectations for quality, performance and specialist use. Whether you’re tackling everyday DIY jobs or professional‑grade projects, trusted brands offer consistency in materials, thread design and finishes, helping you achieve reliable results across a wide range of applications. For high‑performance fastening, TurboGold screws are a popular choice, known for their sharp threads and reduced drive resistance. If you’re looking for versatile options suitable for multiple materials, TurboDrive screws offer dependable performance across timber and construction projects.

Trade‑trusted brands are also well represented. Timco screws are widely used for general building and joinery, while Diall screws provide reliable solutions for everyday household and DIY tasks. For masonry and hard‑surface applications, Easydrive screws are designed to deliver strong anchoring with minimal effort. Specialist projects benefit from purpose‑designed brands such as HardieBacker screws, ideal for cement board and backer board installations. Precision work and engineering projects are well served by Accu screws, while Kreg screws are a popular choice for pocket‑hole joinery and furniture construction. By browsing screws by brand, you can quickly identify fixings that suit your tools, materials and experience level, helping you complete projects with confidence and consistency.

FAQs

What screws do I need for plasterboard?

Screws for plasterboard are designed with a sharp point and fine thread to fix securely into plasterboard without tearing the surface. They are typically used with timber studs or metal framing and sit flush thanks to a countersunk head. Using the correct screws helps prevent cracking, improves holding strength and creates a neater finish, especially when fixing boards to ceilings or stud walls.

 

What’s the difference between wood screws and machine screws?

Screws for wood are designed to bite into timber using a coarse thread and pointed tip, making them ideal for natural and engineered wood. A machine screw has a uniform thread and is used with nuts or threaded holes, often in metal or pre‑tapped materials. Choosing the correct type ensures a stronger fixing and helps prevent damage to the materials being joined.

 

What size screws do I need for decking?

Decking screws are typically longer and thicker than standard wood options to provide strength and weather resistance. The correct size depends on the thickness of the decking boards and the sub‑frame, but common sizes range from 50mm to 75mm. Using screws that are too short can cause boards to loosen, while longer screws help ensure stability and long‑term performance outdoors.

 

What do M4, M5 and M6 screws mean?

M4, M5 and M6 refer to the metric diameter of the screw thread in millimetres. For example, an M4 screw has a 4mm thread diameter. These sizes are commonly used for furniture, fixtures and mechanical assemblies. Selecting the correct metric size ensures compatibility with nuts or threaded holes and helps prevent stripping or loose fixings during installation.

 

What screws should I use for furniture assembly?

Furniture assembly usually requires machine or specialist furniture screws, depending on the design. Sizes such as M4 or M5 are commonly used for flat‑pack furniture, hinges and brackets. Using the correct screw type and size helps parts align properly, prevents damage to panels and allows furniture to be assembled and disassembled without weakening the fixings.

 

What screws are best for fixing into brick?

For brick walls, masonry or concrete fixings are often the best choice. These fixings are designed to cut into brickwork and provide a secure hold, frequently without the need for wall plugs. Alternatively, standard screws can be used with suitable plugs. Choosing the right screw length and diameter helps ensure strong anchoring without cracking the brick.

 

What’s the difference between Pozidriv and Phillips screws?

Pozidriv and Phillips head screws look similar but are designed differently. Pozidriv head screws have additional grooves that improve torque transfer and reduce cam‑out, making them easier to drive securely. Phillips options are more traditional and commonly used in general DIY. Using the correct screwdriver for each type helps prevent slipping and damage to the screw head.

 

How do I choose the right screw length?

Screw length should allow the fixing to pass through the top material and embed securely into the surface beneath. As a general guide, the screw should penetrate far enough to hold firmly without going too deep. Screws that are too short may loosen over time, while overly long screws can damage materials or hidden services.

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