The Difference between the Square Nut and the Round Nut

Hex a nut is used to hold immobilized workpieces, while round nuts are mainly used on workpieces that are locked in the shaft class. In general, when the sheet metal hand space is large enough, use hexagonal nuts, but the use of round nuts, more is not limited force, space is not large, to prevent loose occasions.

However, in general, the round nut and hexagon nut is not much different, but the cost of the round nut is cheap, can save raw materials, large equipment round nut more.

So, how is the round nut used? When using round nuts, it is necessary to use with the round nut with a stop washer, round nut stop washer inside and outside have teeth. The outer thread that is attached to the round nut should be made of the hole eye or groove to be incorporated into the padded inner teeth. After the round nut is in place, the outer teeth of the washer corresponding to the nut screwing groove should be bent into the groove. The nut is then secured.

So after fixing, why will there be a round nut loose? When we tighten the nut, the micro-crumbs, particles, or dredging or densely interstitated between the inside and outside teeth on the surface of the screw, are squeezed more flat, thinner pressure. And together with other dust and scale, it is wrapped in as if it were a "fine sand layer" in the sandwich. When subject to external vibration, the above-mentioned "fine sand layer" first loosened, making the radial and lateral gap of the internal and external thread smaller, and thus causing the axial trace relative movement and the relative rotation of the circumference trace, which in turn led to the loosening of the nut.

Vibration is only the external cause or cause of loosening the nut, and the tooth gap has a "fine sand layer" is the internal cause or root cause of the thread loosening.

So when using round nuts, solving the problem of nut loosening becomes a top priority. Here's a little editor to teach you a trick. Choosing a high-strength product is more reliable and secure than choosing a low-intensity product link when the total strength of the connection is determined. This is because the choice of high-strength products, the number of fastener requirements can be relatively reduced, according to the reliability strength formula, the reliability score of the system connection is high. Round nut milling flat tool includes positioning sleeve, positioning sleeve with a top rod, top bar socket adjustment nut, adjusting nut docking positioning sleeve, adjusting nut at the other end is installed with a return spring, reset spring socket on the back end of the top bar; The lower end of the compression device through the front end of the top rod is connected to the bottom of the positioning sleeve, the upper end of the compression device is equipped with a handle, the positioning sleeve head is opened, and at the same time the positioning sleeve head is perpendicular to the slotdirection direction with two slots, with this scheme, its fixed tool is simple and reliable, And fixed speed, reduce costs, improve efficiency.