Double-headed screws

Studs, also known as double-headed screws or studs. Used to connect the machine to the fixed link function, both ends of the studs are threaded, the middle of the screw, there are thick and fine. Generally used in mining machinery, bridges, cars, motorcycles, boiler steel structure, hanging tower, large span steel structure and large buildings.
Bolt refers to a larger diameter of the screw, you can also no head, such as studs. General, not called "studs" and called "studs". The most common form of stud studs is threaded at both ends and the middle is a light bar.
The most typical use: anchor bolts, or similar feet bolts place, thicker connection, with ordinary bolts can not be achieved. 1, used in the main body for large equipment, need to install accessories, such as mirrors, mechanical seal seat, reducer and so on. Then use the double-headed bolts, one end screwed into the main body, the other end of the annex to install the nut, because the attachment is often removed, the thread will wear or damage, the use of double-headed bolt replacement will be very convenient.
2, for the connection body thickness is very large, the bolt length is very long, will use double-headed bolts.
3, for connecting the thick plate and inconvenience to use hex bolts to connect the place, such as concrete roof truss, roof beam suspension monorail beam hanging pieces.