Socket Screw is a type of fastener that’s built with a Hex internal drive. This feature sets it apart from other screw head drive styles, such as Phillips and flathead screws. Typically, hex drive socket screws are used with a socket wrench, or Allen key, to tighten and loosen them. Because of their superior clamping strengths and internal wrenching capabilities, they’re well suited to environments where space is limited and you don’t have room for a nut and bolt.
Socket screws are available in many different designs. Some are countersunk, which allows them to sit flush with the surface they’re installed in. Others are button or mushroom headed, allowing them to stand up to high loads and temperatures. Some are even tamper-proof, which is great for security and safety-critical applications.
Regardless of their design, they all have one thing in common: they’re easy to install and tighten. They also deliver superior clamping strength that lasts for years, and a professional appearance.
What’s more, they offer a wide range of sizes to accommodate a variety of projects. You can find socket cap screws in metric and imperial measurements, with diameters from M2 to M20 and lengths up to 130mm. Socket Screw