| 摘要 |
A threaded fastener having a shaft with a screw thread disposed thereabout, a pressure flank of the screw thread having a first pressure flank angle on a radial inner portion thereof and a second pressure flank angle on a radial outer portion thereof, the first pressure flank angle less than the second pressure flank angle. The fastener is preferably embodied as a screw fastener with a relatively small gimlet angle. |
