Socket Head Screw
A socket head screw, also known as an Allen head screw, has a hex internal drive built into the head. This allows it to be tightened and loosened with an Allen wrench or hex key, rather than a screwdriver. This makes it ideal for applications where the screws will be frequently tightened or removed, as well as in applications with limited space and clearance for a fastener.
Socket heads are available in a range of styles, including button head socket caps and dome head socket caps. These have a rounded and low-profile head that is smaller and more compact than standard cap screw varieties, so they can be used in spaces with fewer clearance restrictions. They also typically offer higher tensile and yield strength than other screw head types.
Hex socket drives are commonly found on many different types of fasteners, including socket head screws. They are particularly useful in a variety of industrial production and assembly line applications, such as furniture manufacturing, the automotive sector, and steel fabrication. This is because they are easy to install, tighten or loosen, and provide impressive clamping strengths that hold over time.
Socket heads are often available in different finishes, including black oxide, zinc plating, and plain finish. These finishes are all corrosion-resistant, but the choice you select depends on your application and the amount of protection you need from rust. For example, black oxide is an excellent option for harsh environments, while plain finish may be suitable for light-duty or non-critical applications.