Hex socket countersunk screw according to ISO 10642 / DIN 7991 in acid-resistant stainless steel A4. The countersunk head provides a flush, clean surface finish. A4 stainless offers excellent corrosion resistance in demanding or wet environments such as marine, outdoor, and process installations. A reliable choice where durability and appearance are both important. Available in multiple sizes from SWEBOLT & BOTNIA BOLT.