High-strength structural screws have largely displaced traditional lag screws as the fastener of choice for structural ...

Tightening a structural-steel bolt, tiny spurts of orange silicone spread out from a washer beneath the nut. Satisfied, the ironworker moves on to the next bolt. There is nothing new about direct ...

No bolts about it: New technology improves structural strength Researchers have developed functional interlocking "metasurfaces" that offer more structural strength and stability than nuts or bolts.