Nut (fruit) usage of the term is less restrictive, and many nuts (in the culinary sense), such as almonds, pecans, pistachios, walnuts, and Brazil nuts, are not nuts in a botanical sense. Common usage of the term often refers to any hard-walled, edible kernel as a nut. A nut in botany is a simple dry fruit in which the ovary wall becomes increasingly hard as it matures, and where the seed remains unattached or free within the ovary wall. Most nuts come from the pistils with "inferior" ovaries (see flower) and all are "indehiscent" (not opening at maturity). True nuts are produced,
Panel nut socket type tool for removing nuts. Panel nut A panel nut is very thin nut with a relatively large hole commonly used to mount threaded electrical switches. These are often used where light duty precision fasteners are needed. They have width close to the diameter of the fastener they secure. These usually have low thread count. They are of two types hexagonal panel nut and knurled round panel nut. Applications : Panel nuts are used in potentiometer control, light weight lock nut, switch hardware. Material :Brass, stainless steel, aluminium are the materials commonly used for this nut. Panel Nut Wrench: