图示Spiralock丝锥创造了独特的内螺纹牙型。这种牙型不仅不需高的代价和麻烦的锁紧机构便可坚固地锁紧标准外螺纹,而且还改善了丝扣间的夹紧力。 Spiralock Tap creates a unique female thread pattern. Not only does this type of toothlessness require high locking costs and troublesome locking mechanism can be firmly locked standard external thread, but also to improve the clamping force between the threaded.