Square Washers can be either flat or curved. Square Curved Washers are commonly used for nut eye bolts and machine bolts. Square washers are designed for outdoor use in challenge courses, zip lines and other outdoor applications and provide greater holding power than round washers.
are available on the FCH Network with Imperial/US diameters that range from #1 to 2 1/2 and with Metric diameters that range from M5 to M30. The length of is usually measured from the point to the underside of the head.