| 摘要 |
A torque transmission driver has a main body having a first end portion adapted to receive and transmit torque from a torque generation source and a second end portion opposite the first end portion having a series of five or six lobes and troughs about a rotational axis, and a drive side transition between each lobe and trough on at least one side of each lobe forming a negative drive angle between−2° and−10°. A fastener corresponding to the torque transmission driver has a drive end portion adapted to engage the torque transmission driver and a lead end portion adapted to fasten the fastener, the drive end portion having a series of five or six lobes and troughs about a rotational axis, and a drive side transition between each lobe and trough on at least one side of each lobe forming a negative drive angle between−2° and−10°. |
