| 摘要 |
Disclosed is a curved wall fastener, the fastener comprising a curved wall surrounding an axial bore, the curved wall having a first end, a second end and a central portion connecting the first end and the second end, and a shaft configured to be pressed into the axial bore and cause at least a portion of the curved wall to move radially outward, wherein the curved wall is configured to remain at a fixed angle with respect to a longitudinal axis of the axial bore during the radially outward movement.
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