In upholstery, a "rampa nut" can be a specific type of fastening material used when assembling furniture or attaching fabric to frames. In this application, ramp nuts are often used to create a secure connection between various upholstery elements, such as attaching armrests, backrests or other structural components to the frame of a piece of furniture.

Ramp nuts for upholstery are usually designed with a thread on one side and a wide, flat base on the other. This wide base ensures that the ramp nut remains firmly in place when screwed into the frame, while the thread allows a screw or bolt to be driven in to hold the upholstery in place.

The use of ramp nuts in upholstery helps to create a strong and durable connection between the different components of the furniture, which is essential for the structural integrity and longevity of the furniture.