Hex flange nuts (Flange Nuts) are high-performance integrated fasteners widely used in automotive, machinery, construction and solar fields. Integrating nut and washer functions, they solve the troubles of traditional assembly and looseness, improving installation efficiency and stability. With integrated flange design, they increase bearing area, distribute load evenly and protect connected surfaces. We offer serrated, nylon insert and smooth types, with carbon steel (Class 8/10) and stainless steel (304/316) options, zinc/Dacromet finishes, complying with DIN6923/ISO4161 standards, covering M4-M24 and 1/4"-1" sizes, with customized services available.