| 摘要 |
A low energy wood screw that may be inserted quickly and using less energy than conventional screws. In various embodiments, the screw may include a countersunk head (30) having a recess (34) for accommodating a driving tool, a tapered neck (73), a plurality of crown ribs (74) extending over the head and neck, a lubricating coating, main threads (54) with a large thread lead, and lower threads (44) having an asymmetrical profile and extending onto a gimlet point. |
