TVS Metric Series M42 Socket Headcap Screw/Bolt (240-300 mm)

TVS Metric Series M42 Socket Headcap Screw/Bolt (27 mm x 240 mm) are threaded fasteners with a cylindrical head and a recessed hexagon drive. They are often used as wood screws, and in metal-to-metal applications where the hole is pre-tapped. These screws are commonly found on older bicycles, and can be easily identified by their M16 size and socket cap head.

A socket head cap screw (sometimes referred to as a socket head cap bolt) is a type of fastener that has a hex-shaped drive designed to fit into a matching nut or tapped hole. From the underside, that hexagonal drive resembles a six-point star with rounded edges, and it's referred to as a socket.

TVS Metric Series M42 Socket Headcap Screw/Bolt (27 mm x 240 mm) are made of steel with a zinc finish and are used as a fastening device with a hexagonal head. The head is attached to the bolt or screw by swaging, which produces a raised circular point on the end of the bolt or screw. A socket is tapped into the end of the bolt or screw and the nut is then tightened against the raised point to secure the bolt or screw in place. Socket Head Cap Screws/Bolts are commonly used to attach small parts in machinery and equipment. They can also be used in situations where dissimilar metals may be joined together through an adhesive bond or when the parts being fastened need to be disassembled or reassembled frequently.