The performance of threaded fasteners – screws, nuts, and bolts – is critical in commercial engineering. The Fastener Quality Act of 1990 was enacted by Congress after several high-profile fastener failures (such as when the San Francisco-Oakland Bay Bridge’s upper deck suffered a catastrophic collapse in 1989, partly because of a corroded bolt), according to the National Institutes of Standards and Technology.(…)
via A new mechanical process improves threaded-fastener performance | Fastener Engineering.