Device clamping, multi-purpose, with removable, interchangeable and customizable plate

A mechanical closure and fastening device, comprising:

• a first part, comprising a plate with a pin extending therefrom, the pin comprising first and second shaped sections in registry alignment and a narrower engaging section therebetween;
• and
• a second part, comprising first, second and third plates, joined together with the second plate between the first and third plates, each plate having an opening in registry alignment and shaped to receive the first and second shaped sections when said pin is inserted thereinto;
• wherein said second plate comprises a rotatable plate within a fixed housing, and having a lever with which the rotatable plate is rotated between an open position and a tightened, locked position within the housing, wherein in the tightened, locked position the opening in the rotatable plate is rotated out of registry alignment with the openings in said first and third plates;
• and wherein when the rotatable plate is in the open position, and the pin is inserted into the openings, the first and second shaped sections of said pin are fixedly engaged by the openings in said first and third plates, and the engaging section therebetween is aligned with the opening in said second plate, the rotatable plate is rotated with the lever about the engaging section to the tightened, locked position to thereby capture the first shaped section and lock the first and second parts together.