Socket Button Head Cap Screw

Socket Button Head Cap Screw, also known as a dome head socket screw or a bulbous socket head screw, are hex-drive fasteners with a low-domed appearance. This recessed head style provides an ample load-bearing surface that resists loosening, and it allows more torque than standard socket heads to be applied. The flat, rounded design of the head also looks attractive and helps to minimize the risk of objects catching on or getting stuck in the fastener.

These hex socket screws are often used in applications with little overhead space or limited clearance where a flush, finished appearance is desired. While they do not have the strength of standard socket caps, they provide good clamping power and can be installed at any depth in a counterbored hole. They can be a cost-effective alternative to tapped threaded rod when a high clamping force is required.

Unlike standard socket caps, which use an external hex drive for installation, button head cap screws have a recessed, hex-shaped socket that accepts a wrench. Their larger diameter face distributes the tightening force more evenly across the head than a normal hex screw, which can help reduce loosening over time.

Hex socket button head cap screws are usually made from steel with a corrosion resistant finish, but they can be found in a variety of materials and finishes to suit different applications. Choosing the right fastener for your specific needs will depend on factors like strength, durability, corrosion resistance and aesthetics. Button Head Cap Screw

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