What are Button Head Socket Screws?
Button head socket screws are a type of fastener characterised by a low, dome-shaped head and a hexagon socket drive. This design allows them to be tightened with an Allen key, making them suitable for applications where space is limited and a low profile is required. The smooth, rounded surface of the button head makes these screws aesthetically pleasing. It minimises the chance of snagging, which is particularly beneficial in consumer products and applications requiring a clean finish.
These screws are commonly used in applications requiring a clean, finished appearance, featuring a low-profile head that provides a smooth, unobtrusive surface. They are ideal for securing parts where the screw head might be exposed or where clearance is limited. Typical uses include furniture assembly, electronics, machinery, and automotive components, where aesthetics and functionality are essential. They are strong and can be used in metal, wood, and plastic assemblies.
When selecting button head socket screws, several important details need to be considered. It is crucial to choose the correct diameter and length to match the specific needs of the application, ensuring the screw can handle the required load and fit correctly. These screws are available in various materials, including stainless steel, alloy steel, and carbon steel, with material choice affecting the screw’s strength, corrosion resistance, and suitability for specific environments. The hexagon socket drive requires matching Allen keys for installation, and ensuring compliance with international standards such as ISO or DIN can affect their compatibility and performance. Additionally, different finishes, such as zinc plating or plain finishes, can impact the corrosion resistance and overall durability of the screws.
Due to the unfavourable head geometry, these screws have a reduced load ability. Steel fasteners marked with “0” preceding the property class (i.e. 010.9 or A2-070) have a maximum load of 80% of the tensile strength. As such, the pre-load and application should be considered before use.
Available Options from Fabory
Fabory offers a wide range of button head socket screws in various materials, including stainless steel, alloy steel, and carbon steel. The available standards include ISO 7380-1, ISO 7380-2, ASME B18.3, and others. Screws come in different sizes, ranging from M2 to M16 in metric sizes and from #4 to 1 inch in imperial sizes. Surface treatments include plain and zinc-plated finishes. These screws are suitable for various applications requiring a clean, low-profile fastening solution.