Back when hardware meant bony plates and flesh-rending teeth, a living version of the humble screw evolved naturally in, of all places, the leg joints of weevils. The legs of at least 15 kinds of ...

Nuts, bolts, and machine screws are the most common fasteners used for thin joints, despite the ongoing development of other fastener types. One reason for their popularity is that they are come in a ...

A technique to manage an unusual presentation of an implant abutment screw fracture is presented. Causes of abutment screw loosening and fracture are reviewed. Design features that improve the ...

Tapping screws form mating threads in materials they are driven into. There are two basic types: thread forming and thread cutting. The thread-forming screw displaced material around the pilot hole so ...