Self tapping screws with hexagon socket countersunk head Drawing in attachment 4.8-1.6 x "L" MFL HS AB 25.000 units / year. or MOQ (Evtl. quote separately the Salt spray continuity test) Grade 1 (Steel base metal): This grade is for chromium plated parts whose finish has been applied for: A. Appearance B. Good corrosion resistance because these parts are normally exposed to warm, dry interior atmospheres but with the plating being subjected to occasional condensation of moisture, wear or abrasion. Detail requirements: Base Metal Steel: 6.1 Grade: 1 Minimum plating thickness: Copper Option: 7.6 Nickel: 10 Total Cu + Ni: 19 Chromium: 0.2580 Humidity corrosion tests: 180 hrs Salt spray continuity test: 24 hrs