Zero point clamping heads of the NSM-PV series are used for device and pallet clamping on machine tools. With the clamping heads and attendant clamping bolts, maximum repeat precision of the clamping position is achieved. In the version with blowing-off device, lock and lift-out stroke, the clamping head is safe even when used without personnel. Due to the mechanical clamping principle with integrated force intensification and locking feature, the clamping head is also suitable for pallets, clamping towers, swivel tables and vertical applications. The clamping head can be installed as double, quadruple or customer specific multiple application.