Hex nuts stainless steel with seal washer in hygienic design

The Hygienic DESIGN fastening system was specially developed for use in food processing facilities. Special attention was paid to the cleaning-optimised geometry and a surface finish of Ra ≤ 0.8 µm. The quick and easy installation due to a pre-installed sealing washer rounds off the overall package.

EN ISO 7380-1 Form A: Hexagon socket button head screws. EN ISO 7380-2 Form B:Hexagon socket button head screws with collar.

The surface of the hexagon head bolt is polished and, with regard to design optimised for the use in hygienic environments. The bolt head is convex on the top face and the collar has a conical formed top surface. Instead of troublesome embossing or indentations, the bolt head is smooth with a surface finish of Ra 0.8 µm. Dirt and residue from products or cleaners seldom adheres and easy cleaning is ensured.

Steel, black oxidised. Stainless steel, bright. Note: Due to the better haptics, a larger pitch was chosen contrary to DIN. Drawing reference: Form A: without pin hole Form B: with pin hole Drill through and ream pin hole during assembly.