M1.6 screw and bolt sizes for the more common ones we deal with. This will give information about the maximum screw head heights and head diameters as well as the driver size needed to install or remove them. If unfamiliar with DIN and ISO numbers, they can be thought of as exact fastener names for each specific screw and are usually given as either DIN or ISO (eg. DIN 912 or ISO 7380). Hexagon Nuts from Accu are manufactured in a wide range of materials. Metal Hex Nuts available include A1, A2, A4 Stainless Steel, with High Tensile options in Duplex and Bumax Stainless Steel. Mild Steel (Grades 6, 8, 10 and 12) is also available with either Hot Dip Galvanised or Zinc Plated finishes. All Full Thread Hexagon Headed Bolts are precision rolled to achieve general tolerances of +/-0.13mm. These components feature a full thread which runs the entire length of the bolt's shaft, and are designed for use alongside Accu's Hexagon Nuts ranges. Fully Threaded Hexagon Bolt Materials Hex bolts – have a hexagonal shaped head and can have a full or partially threaded length, used with a tapped hole or interior nut thread.

Fully Threaded Hexagon Bolts are designed for use in heavy-duty fastening applications, and feature a hexagonal head for use with a standard spanner. As their name suggests, these fasteners are threaded all the way up to the head of the bolt, making them ideal for installation into pre-threaded holes. Plain Hexagon Bolts , with a reinforced unthreaded shaft section, are also available. The M1.6 x 4mm Phillips Pan Head Machine Screws (DIN 7985H) - Marine Stainless Steel (A4) has the following features: A Hexagon Bolt, commonly shortened to Hex Bolt, is a threaded fastener with a hexagonal head often used with nuts to join multiple components together. Nuts & Bolts work by compressing the parts held together between the bolts head and the nut - this causes a miniscule amount of elastic deformation of the bolt, and a resultant tension in the bolt which clamps the parts together with the bolt threads acting like a wedge. Hexagon Bolts are favoured for their robust shape, which makes them suitable for more heavy-duty fastening applications. Hexagon bolts, sometimes referred to as Hex Head Screws, are also generally available in larger sizes than alternative fasteners. Our slotted countersunk head screws, manufactured to DIN 963, come in sizes ranging from the delicate M0.5, suitable for intricate assemblies such as watchmaking, up to the robust M16, for larger-scale engineering projects. Lengthwise, our range spans from the minute 2mm all the way to the longer 160mm. Accu provides a comprehensive selection of these screws in both metric and imperial sizes , catering to a vast array of industrial and commercial applications. FAQs Q: Why are countersunk slotted screws ideal for my project?Accu also lists Plastic Hex Nuts in our standard range, with Nylon, Polycarbonate, Polypropylene, Reny and Polyphenylene options available, along with specialist thermoplastics like PVDF and PEEK. Accu's range of Cap Screws are manufactured in accordance with industry standards, such as DIN 912 and ISO 4762. One general distinction between a screw and a bolt is that bolts are driven from the outside of the head, whereas screws are operated by a central drive. Another key difference is that bolts are generally used in conjunction with unthreaded holes and secured usingNuts, but screws are fastened directly into a threaded hole. However, many customers find that there is no universal distinction between these components, and there are numerous exceptions to these rules. For more details, read our in-depth article on the difference between screws and bolts. Phillips Pan Head Machine Screws are manufactured in accordance with DIN 7985H, and are available in metric thread sizes of between M1.2 and M10, and lengths from 1.5mm up to 100mm. Imperial Phillips Pan Head Screws The M1.6 x 3mm Slotted Countersunk Screws (DIN 963) - Marine Stainless Steel (A4) has the following features:

The ingenuity of slotted countersunk flat-head screws lies in their ability to align perfectly with the material's surface. When driven into a countersunk hole, the angled sides of the screw head align with the sloped sides of the hole. This allows the top of the screw to sit flush with the surface, offering a neat finish and reducing the risk of snags or abrasions. These components feature a coarse metric thread pitch, which makes them more resistant to cross threading and stripping. These components also feature a low-profile pan head, which has rounded edges for safety and aesthetics. When combined with a Mating Bolt , a hex nut can be used to fasten two or more parts together through a combination of compression, friction (of the threads of the fasteners), and a slight stretching of the bolt.State of the art facilities specialising in both small batch prototyping and large scale manufacture.

Accu can also offer Vented Cap Screws , which are a specially modified variant of this component that allow the release of gases and pressure through a bore that runs through the centre of the screw. Materials Self tapping screws – have a pointed tapered end that allows them to be drilled into any surface. Available in both Pozidriv and cross drive types. Washers are also often used with nuts and bolts to help distribute the load of the fasteners, for spacing or protecting the surfaces of the mating components. Hexagon Nuts can be manufactured in alternative material types such as Aluminium, Brass, Phosphor Bronze and Titanium on request. Metric Hexagon Nuts Metric Full Thread Hexagon Headed Bolts manufactured according to DIN 933, and are available in diameters ranging from M2 up to M36. Lengths of between 3mm and 200mm are also available as standard. Non-Standard sizes are available on request. Imperial Fully Threaded Hexagon BoltsThere is a huge variety of types of screws and bolts available in the market that are available in different drive types, head styles, materials, sizes and thread pitch. They can be used with a range of complementary nuts and washers to prevent loosening once in place. Some of our most popular fixing categories include: A: Countersunk slotted screws are the fasteners of choice when a smooth, seamless finish is required. Their design allows them to lie flush with the surface, preventing snags and providing a clean look. Additionally, the slotted drive provides a fast and relatively easy way of installation. Q: Are slotted countersunk screws available in materials suited for outdoor use?

A full range of imperial and metric sizes are available, and standard components range from M2 up to M36 in diameter. Lengths from 3.00mm up to 300.00mm are also available. What is The Difference Between a Screw and a Bolt?. A: A flat-head screwdriver that fits the slot width and length precisely is the ideal tool for installing slotted countersunk screws to avoid cam-out and ensure a secure fit. Q: How do I choose the correct slotted countersunk screw for my application? Machine screws – designed to be used with a tapped hole or interior nut thread. Available with all common head types including pan, flat, countersunk and truss. Metric Fine Pitch Hexagon Nuts are available from our online store for applications which require finer adjustments and greater resistance to loosening under vibration. Imperial Hexagon Nuts The M1.6 x 5mm Full Thread Cap Head Screws (DIN 912) - Stainless Steel (A2) has the following features:As their name suggests, Full Thread Hexagon Bolts are fully threaded. This type of bolt is required when the shaft of a fastener is being inserted completely into a threaded hole. Fully Threaded Bolts are often used to securely fasten two threaded sections together. Full Thread Carriage Bolts are also a popular fastener choice. Hex Bolt Materials. The choice of a slotted drive type for these aptly named slotted countersunk machine screws is deliberate, providing a classic, straightforward approach to driving the screw while allowing for a satisfactory level of torque application without the need for specialized tools. This traditional drive type is favoured for its simplicity and the ease with which it can be aligned, ensuring a secure and precise installation. What Material Countersunk Slotted Screws Are Made From Metric Phillips Pan Head Machine Screws feature a widely used Phillips drive, and are designed for use alongside Accu's Phillips Head Screwdriversand Phillips Head Drive Bits. For more information on the Phillips drive, see our article, What is The Difference Between Phillips and Pozi Drives?