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Why Are Hexagon Nuts And Bolts Hexagon?

Mar. 20, 2021

Why Are Hexagon Nuts And Bolts Hexagon?

Hex nuts and hex bolts are probably the most common types of fasteners, and they are everywhere.

The reason they are so popular is because the hexagonal shape of the head is very versatile, it can be grasped by tools from all angles, and even by hand if needed.

Hexagon nuts take advantage of their shape. They have 6 sides, it is easy to tighten and loosen, and you can touch them 360 degrees, providing space for moving tools.

These hex nuts have been around for a long time, they were first documented around the 18th century and have been in use ever since.

The same principle applies to hexagonal bolts, because their shape is easy to tighten and loosen.

They are hexagonal nuts and hexagonal bolts, rather than pentagonal or octagonal, because the sixth side of the hexagonal shape provides enough surface for the tool, but over time, they are not easily rounded off through use. Hex nuts and bolts will inevitably lose some shape, but not having too many edges makes them possible to last longer.

They are easy to turn

The bolts and nuts are designed as hexagons because they are easy to turn. With the hexagon, you can turn a fastener to one-sixth of the position and reach the next plane in parallel. There are six parallel lines on the hex bolt and nut. When you tighten the hex bolt or nut, you must turn it from these parallel lines. Hexagonal fasteners are easier to turn than other types of fasteners because they have six parallels.

To better understand how the hexagonal shape increases the difficulty of turning bolts and nuts, consider this example: a square fastener has four sides. In order to tighten the square bolt or nut, you have to turn a quarter of the direction each time to reach the next parallel plane. On the other hand, hexagonal fasteners only need one-sixth of the turn to reach the next parallel each time. In other words, you must rotate a square fastener 90 degrees to "click" it into a parallel plane, while a hexagonal fastener only needs to rotate 30 degrees to reach the next parallel.

If a bolt or nut has more than six sides, it may break. Therefore, the hexagon has become the most important shape for manufacturing bolts and nuts.

Generally accepted

Although the main reason why bolts and nuts are hexagons is to make them easy to turn, hexagons have also become a generally accepted standard. Consumers and businesses all over the world are using hexagonal fasteners. If the fasteners have many different shapes, they will not be compatible with each other. This has prompted many manufacturers to focus exclusively on the manufacture of hexagonal bolts and nuts.

There are several shapes of bolts and nuts, but the most common shape is hexagon. The use of hexagons reduces the required turning distance and makes the fasteners easier to turn. To tighten a bolt or nut, you must turn it. Because of the sides of the hexagonal bolts and nuts, they only need to turn a radius of 30 degrees to reach the next flat parallel.

Hex Bolts

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