Q. How countersink bolts are manufactured?

Cutting the round bar is the initial step in countersink bolt manufacturer. Unlike saws manufacturers shears cleave steel like a guillotine. They can shear 2" circular bar up to 100" long. Band saws cut longer or wider bolts. Next Steel rods have hot-forged hex heads. The round bar's end is heated to 2000°F using an induction heating coil. A National Upsetter forges the heated rod end into a hex head. Gripper blocks hold the circular bar while a plunger or die compresses the heated end to form the hex head. The gripper block's second location stamps the head with the manufacturer's logo and grade symbol when needed. This anchor bolt's concrete-embedded hex head resists pull-out. High-speed cutting blades Countersink bolt ends before threading. After threading and galvanizing the countersink bolts this beveled end makes nut assembly easier.