RS PRO Slot Countersunk Stainless Steel Machine Screw M4 20mm A2 Grade DIN 963 527-202

The RS PRO 527-202 Slot Countersunk Stainless Steel Machine Screw is a high-performance fastener designed for demanding settings that require reliability, durability, and corrosion resistance. Manufactured from A2 grade 18/8 stainless steel (304 S15), this machine screw offers superior strength and chemical resistance making it suitable for environments where exposure to moisture, acids, and harsh conditions is common.

This screw features a 20mm length and M4 metric thread and is fully threaded, ensuring secure fastening through pre-tapped holes or with matching nuts and washers. The countersunk head design allows the screw to sink flush with the material surface, reducing snag points and enabling smooth finishes, which is critical in equipment, appliances, and panel assemblies. Its slot drive is compatible with standard slotted screwdrivers, simplifying installation, maintenance, and replacement tasks. The plain stainless steel finish is both aesthetic and functional, offering a clean look and recyclability for eco-conscious industrial applications.

The RS PRO Slot Countersunk Screw conforms to DIN 963 standards, ensuring consistency, interchangeability, and compliance with international regulations. It withstands high operational temperatures, up to 800°C, making it suitable for hot zones such as processing equipment, heaters, and power components. This product is designed for reliability in food processing, medical devices, chemical processing, electronics assembly, construction, and various manufacturing settings.

Fully threaded stainless steel Machine Screws like this are crucial for machinery, tools, electronic devices, vehicles, and countless industrial systems requiring robust mechanical joints. They are frequently chosen for applications where hygiene, safety, and long-lasting performance are paramount, including laboratory and cleanroom installations.

Precision engineered for industrial and technical use cases. Flush-mount countersunk head supports clean, snag-free surfaces. Adaptable for mechanical, electrical, and laboratory assemblies. Meets DIN 963 standards for thread and drive reliability.

Stainless steel construction is resistant to rust, oxidation, and chemicals. Slot drive design enables easy assembly and field maintenance. Operational up to 800°C, suitable for high-temperature industrial processes. Compatible with a broad range of nuts and washers for flexible usage.

Typical applications: food, medical, chemical, construction, commercial, electronics. Recyclable material enhances sustainability compliance in manufacturing.

This RS PRO machine screw is ideal for industrial engineers, maintenance teams, and OEMs looking for quality fastening solutions to ensure the structural integrity of their products. Explore more fasteners and fixings in the RS PRO range for tailored mechanical solutions.