Marman clamp

As the circumferential tension increases, the V-groove wedges over flanges on the circular parts to be assembled, providing the axial force that holds the ends of the two cylinders together.

Another variety uses a flat strap, used where systems carry low pressure or to hold a cylindrical object in position.

[2] Marman clamps are used extensively in spaceflight systems and are common mechanical load-transfer and clamping mechanisms for connecting the upper stage and the satellite payload of space vehicles,[3][4] for example, on the Cassini Plasma Spectrometer on the Cassini orbiter.

The tension of the clamp band itself is used to power the unscrewing of a central bolt, when released by a pyrotechnic pin puller triggered by a set of redundant NASA Standard Initiators (NSIs).

The U.S. Military used Marman clamps to transport the atomic bombs used at the end of the Second World War.