The fundamental principle behind the operation of a plastic expansion bolt lies in its unique design. It consists of a threaded shaft, a plastic sleeve, and a nut. When the bolt is inserted into a pre-drilled hole, the plastic sleeve expands as the bolt is tightened. This expansion creates friction against the inner wall of the hole, providing a strong grip and anchoring the bolt firmly in place.
...
2025-08-14 06:47
735