Knurled nuts are specialty fasteners featuring a textured, ridged outer surface that provides excellent grip for hand tightening without the need for tools. Unlike standard hex nuts, their cylindrical body and knurled pattern allow users to secure or release them easily, even in confined spaces or when frequent adjustments are necessary. They are commonly used in electronics assemblies, instrument panels, and applications where controlled finger tightening is required. Knurled nuts are often manufactured from stainless steel, brass, or aluminum, offering both durability and resistance to corrosion. Their practical design combines functionality, ease of use, and a clean, professional appearance.