self drilling screw, countersunk head, metal tapping screw thread, blue zinc plated, roller sorted 3.9x28 mm ( 2000 ST ) 28 mm | Standardverpackung
Product number: 3112100-3.9-28
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)
Ø 7.1 mm (l = 25-45 mm)
for steel reinforcement up to 3.5 mm