Buy from our range of Square Flat Washers below! Due to their flat sides, square flat washers are also commonly used in complex machine housings. High-vibration machinery, mine screening equipment and commercial washing machines, as just two examples of this application practice, use the flat, square fastener parts in restrictive spaces to ensure anchoring reliability, even when those vibrational forces try their best to loosen the bolt. Narrow vehicle crevices, square tubing, construction frame components, all of these applications and more benefit when shim-capable square flat washers are called into service. Buy from our range of Nuts, Bolts and Screws Online!