| 摘要 |
<p>A shearable fastener comprises an operative part, eg a threaded shank (11), capable of clamping engagement with an object to be fastened, and a shearable part, eg an hexagonal head (13), adapted to shear from the operative part upon application of a predetermined torque. A restraining component (15) joins the operative part and the shearable part and retard movement of the latter when shearing of the fastener occurs.</p> |
