3112100

self drilling screw NoRi, countersunk head, metal tapping screw thread, blue zinc plated 3.9Xxx

• metal tapping screw thread Ø 3.9 mm
• drill tip at least 4.5 mm
• countersunk head 90°, cross recess PH2
• head diameter depending on length:
  Ø 7.4 mm (l = 11-22 mm) without brake ribs
  Ø 7.1 mm (l = 25-45 mm) with brake ribs
• for steel reinforcement up to 3.5 mm