Cabeza hexagonal interna

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An internal hexagonal head screw, also known as a hex bolt, is a type of fastener that features a six-sided flat top and a threaded shank. This design allows for easy tightening and loosening using a hex wrench or a socket with a corresponding hex bit. The hexagonal head provides increased surface area compared to other screw types, which can result in a more secure grip and enhanced resistance to loosening over time.