Preventing the bolt from turning when the nut is tightened
Commonly used in heavy duty equipment to provide a smooth head surface
Known for attaching the cutting edge of a plow to the plow blade, such as on a snowplow, grader, or bulldozer
3/4"-10 Plain steel plow bolts have a slight #3 dome head for a finished look, and the shank is topped by a short countersunk square section under the head.
