| 摘要 |
A threaded fastener comprises a head component for the application of torque to the fastener, an externally threaded shank portion, resilient linking means for interconnecting the head component and the shank portion a certain axial distance apart and for resiliently biasing against axial displacement of the shank portion from the head component a distance other than such certain axial distance, and torque transmitting means for transmitting torque from the head component to the shank portion. The torque transmitting means is able to transmit sufficient torque from the head component to the shank portion to cause axial displacement of the shank portion in an aperture in a work piece against the resilient biasing of the resilient linking means, whereby the resilient means is elongated and put in axial tension. 2095K |
