In a new video, New Mind outlines the history and importance of the washer, a metal fastener that distributes the load of a threaded fastener, so that a bolt can fit in a hole, otherwise too large, and ensure tightness.
Washers can also act as spacers or springs, and some may lock or indicate wear or preloading conditions.
Spring washers, including Belleville washers, help prevent fasteners from loosening over time, while wave washers provide precise force against the bolt for preloading.
Locking washers, on the other hand, utilise teeth or stops instead of springs to prevent fasteners from loosening.
While there are plenty of standards for washers and bolts, there are also many oddities in the field.
