Q. What is the purpose of a countersunk bolt?

Answer

Countersunk bolts, also called flat-heat bolts, are screws with a flat head that are designed to sit flush with the material into which they are placed. When a sleek finish is essential, countersunk bolts are the way to go. Utilized frequently for bridge decking, walkways, and railing. Both slotted and non-slotted bolt heads are commercially available. Customized bolt heads with the company's name and/or logo can be manufactured with the use of specialized tooling. The first is to eliminate any rough edges caused by exposed bolt heads. It is common practice for certain manufacturers to employ the countersink to hide the bolt altogether.