Diameter-Threads Per Inch: 7/16-14 Length: 1-1/4 inch Grade 5 bolts for moderate stress applications. Stronger than Grade 2 bolts but not as strong as Grade 8 bolts

Plow bolts are a specialized type of fastener. These are similar to carriage bolts, but the head of a plow bolt is concave or flat. The underside of the head tapers down into a cone-shape which is engineered to fit into a countersunk recess