Hex Flange Bolts are regular hex head bolts with built-in washer and externally threaded body. Flange bolts comes with plain or serrated flange configuration. Hexagon flange bolts, flange bolts, frame bolts are other alias of hex flange bolts.

This hexagonal flange fastener adopts an integrated structural design, consisting of three parts: a central threaded body, an expanded flange plate, and an end sealing cover. The expanded flange plate is positioned on the pressure-bearing side of the fastener, while the end sealing cover is located at the threaded closure end. The innovative sealing cover design provides multiple protective effects, effectively preventing environmental erosive factors such as liquid moisture and corrosive dust from infiltrating the threaded engagement area. This fundamentally inhibits metal oxidation reactions, thereby elevating the fastener's environmental adaptability and durability to a new standard.

• The shank part of the hex flange screws adopts a hexagonal design. This design is not only aesthetically pleasing and elegant but, more importantly, facilitates rotation with a wrench, enabling tightening and loosening operations.
• At the other end of the shank, the hex flange screw is equipped with a flat flange. The function of this flange is to increase the connection area, enhancing the stability and sealing of the joint.
• Compared to ordinary bolts, hex flange screws have a larger ratio of bearing area to stress area, allowing them to withstand higher preload forces and ensuring a more secure connection.
• Thanks to the presence of the flange, hex flange screws can effectively prevent loosening under vibration or impact, ensuring the stability of the connection.