It has the locking characteristic of both floating-head and countersunk screw. When used to assemble the complicated machines, it provides better tensile strength

Hexagon bolts with flange-Small series.

These bolts or screws are designed to fasten wheel hubs to wheel rims. They normally have a flanged hexagon head, with a tapered or spherical under-head bearing surface.

Used in engines to secure connecting rod to piston

It is used to assemble components where protrusion is allowed; It is often used in the assembly of less complicated machines with easy-fastened components.