In upholstery, a "Rampa nut" (threaded insert nut) is a specific type of fastener used when assembling furniture or attaching upholstered parts to frames. In this application, threaded insert nuts are often used to create a strong connection between different upholstery elements, for example when fixing armrests, backrests or other structural parts to the frame of a piece of furniture.
Threaded insert nuts for upholstery are usually designed with an internal thread on one side and a wide, flat base on the other. This wide base ensures that the insert nut stays firmly in place once it has been screwed into the frame, while the thread allows a screw or bolt to be fitted to hold the upholstery in place.
Using threaded insert nuts in upholstery helps to create a strong and durable connection between the different components of the piece of furniture, which is essential for its structural integrity and service life.
