Protect your investments with lock washers! Most people do not know they need them until the problem is too big to fix. If you install loose fasteners on an industrial machine, for example, it is likely to break down permanently- costing you more time and money with every passing moment that the machine operates without tightening its fasteners. Lock washers are one way that can prevent this from happening by preventing nuts and bolts from loosening over time. They're easy to use, inexpensive, come in various sizes depending on your needs, and most importantly protect all of your vital work equipment with these simple additions!