Catalog number: BN425 Features: ●Can be used on concrete without a plug. ●If the screw spins freely due to overtightening, the pad can be used to reinstall it in the same place. Applications: ●Facility construction, carpentry, plumbing, electrical work. Specifications: ●Nominal diameter d (mm): 4 ●Pilot hole diameter (mm): 3.4-3.5 ●Drilling depth (mm): 35 ●Length (mm): 25 ●Compatible screwdriver: Phillips No. 2 ●Head shape: Pan head Material/Finish: ●Steel Note: ●The drilling depth is the total length and 10mm-t (thickness of the object to be attached).
