Catalog number: F840 Features: ● The wings on the left and right further increase the fixing power. ● When the screw is tightened, it expands in four directions and fits firmly into the base material. Application: ● Concrete Specifications: ● Length (mm): 40 ● Suitable screw diameter (mm): 4.5-6.0 ● Pilot hole diameter (mm): 8 ● Size (mm): 8 ● Screw length (mm): 48-50, thickness of object to be attached ● Pilot hole depth (mm): 55 ● Packed
