F-series 

F-series clamps are designed for heavy duty machining when extreme clamping force is required. Though small in size, they have an excellent clamping force of up to 150 kN.

With F-series clamps, it is important to use a torque wrench to avoid potential damage to workpieces due to excessive force.

F-series clamps are designed for a M16 socket head screw (a 5/8" screw is recommended for the inch models).