China Fasteners Suppliers made the nuts hexagonal for ease of use. On the machine, the place where the nut is installed is sometimes not ample enough, and the space for the wrench to screw the nut is also quite narrow. Hexagonal nuts only need to turn the wrench 60 degrees at a time to slowly tighten the nuts, and the square nuts need to be turned 90 degrees each time. That is to say, in order to tighten the nut, the hexagon is smaller, but the octagonal nut is easy to slip due to the small contact surface between the wrench and it, and it is usually rarely used, so the hexagon nut is the most convenient to use. Looking at the wrench again, the handle and the wrench of the ordinary wrench can be formed at an angle of 30 degrees, so that when the place where the nut is installed is very narrow, and the wrench cannot move freely, and the hexagon nut, as long as the wrench is pulled by a nut, Turn the wrench over and pull the nut again, so that the nut can be tightened by pulling it back and forth several times. The appearance of most Hexagon Socket Head Bolts is similar to ordinary bolts. The difference is that a cavity is designed inside the bolt to accommodate a certain amount of detonating charge and detonating device. After receiving the action signal, the ignition device ignited the charge and cut the entire bolt into 2-3 parts. This may sound simple, but the design and manufacture of Hexagon Socket Head Bolt has many difficulties. The first is that the Hexagon Socket Head Bolt must contain sufficient mechanical strength while also ensuring a very reliable explosion separation. There must be no or only a few explosive fragments during explosive separation. In order to ensure this, many Hexagon Socket Head Bolt pressed stress grooves on the bolts, and the bolts broke from these stress grooves when exploded. If properly designed, Hexagon Socket Head Bolt can be completely free of explosive fragments, and the geometry of the bolt break zone is very regular. At the same time, there are strict requirements for the reaction time of explosive bolts.