In fact, the appearance of hexagonal flange bolts is not very different from ordinary ordinary hexagonal head bolts, but there is still a certain difference. For example, the head of hexagonal flange bolts is composed of hexagonal head and flange surface. It is composed of two parts, which is also the fundamental difference from ordinary hexagon head bolts. Because of its structure, its "support area to stress area ratio" is larger than that of ordinary hexagon head bolts, and therefore the preload that hexagon flange bolts can withstand is also better, which means that it It has stronger anti-loosening performance, so it is widely used in automobile engines, heavy machinery and other products, and has a good effect.

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