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

Truck wheel rims are joined usually by ray screws, and rims are fastened to hubs with knurled studs or pins.