Catalog number: B-423BT Features: ●Screws can be attached and detached freely, and they can be easily applied to achieve a uniform finish. Applications: ●For attaching lighting fixtures, audio equipment, and shelf brackets to hollow walls. Specifications: ●Screw designation: M4 ●Outer diameter (mm): 6.7 ●Screw length (mm): 52 ●Applicable plate thickness (mm): 17-23 ●Drill hole diameter (mm): 9 ●Maximum tensile load (kN): 0.50 Material/Finish: ●Steel ●Surface treatment: Trivalent chromate treatment Note: ●The maximum tensile load is the value when the concrete strength is FC21N/m［［Ｍ２］］.
