M4 x 40 INOX Stainless hexagon head bolt with seal hygienic

The WDS Hygienic Design fastening system is a specialized solution meticulously developed for applications in food-processing facilities, ensuring optimal hygiene standards. The emphasis on cleaning-optimized geometry plus a surface finish of Ra ≤ 0.8 µm sets this fastening system apart.

This hex head bolt, manufactured from Stainless Steel 1.4404, provides durability and resilience in demanding environments. Featuring a pre-mounted sealing washer, the installation process is quick and straightforward. The sealing washer, made from EU10/2011 and FDA conform Thermoplastic (POM), add an extra layer of reliability. The hex head bolt is available in polished or unpolished Stainless Steel, offering flexibility to suit various aesthetic preferences.

The sealing washer, coated in RAL5002 - ultra marine (POM), not only contributes to the aesthetic appeal but also meets stringent food safety standards. It is crucial to note that the contact face for the sealing ring must ideally be flat and perpendicular to the threaded hole.

Please be aware that the sealing ring is unsuitable for acidic cleaning (pH < 4) and oxidizing agents. The temperature range for the POM sealing washer is -20° to +100° C, ensuring suitability for a broad range of applications within the specified conditions.

The advantages of this fastening system include a pre-installed, exchangeable seal washer, making maintenance hassle-free. The use of foodstuff conforming materials and a cleaning-optimized geometry further enhances their suitability for hygienic environments.

Users can request special versions tailored to their specific needs. It's crucial to highlight that the suitability of the Hygienic Design fasteners for a particular application must be verified by the user. Regular inspection of the sealing washer, considering factors such as loads, temperature, cleaning media, and product media, is recommended, and replacement should be undertaken as necessary.

In summary, this Hygienic Design fastening system, also known as a hygienic bolt, is designed for optimal hygiene in food-processing facilities. The bolt includes a Stainless Steel hex head bolt and a sealing washer made from food-safe Thermoplastic, offering durability, easy maintenance, and compliance with industry standards. This solution finds applications in food processing, pharmaceuticals, and other hygienic environments where cleanliness is paramount.