Product details:

No. 3 domed head has a countersunk, flat head, a square neck and unified thread pitch. Made from grade 5 hardened steel to increase wear-resistance. Install by pushing the plow bolt through a pre-drilled hole, secure placement with hex nuts and washers. Commonly used in road graders, scoop shovels and other heavy-duty equipment where a smooth surface is required at the spot of head protrusion. The square neck helps prevent the bolt from turning when the nut is adjusted.