How to check the quality of 8 inch long screws

How can we guarantee to buy good quality when purchasing long screws? In fact, we not only purchase long screws, but we will choose good quality products no matter what we purchase. How to check the quality of 8 inch long screws? Let’s take a look.

First of all, we need to check whether the surface of the 8 inch long screws is even. If there are any problems such as whitening, blackening, and smudging, do not buy it. Choose a screw with a uniform surface and normal color.

Secondly, the grooved part of the long screws needs to be noticed. If the screw groove is shallow or burr, the inner diameter of the screw is rough, which will affect the work efficiency of the installer and is not beautiful.

Finally, if the head of the 8 inch long screws is eccentric, the head, the head is not round or not full, the burr phenomenon, the head has no headshots and cracks, if there are these bad phenomena, you can not buy.

Generally, long screws are often used in machinery, and have the advantages of separation and solidity with the base metal, and are widely used in various industries, such as electrical products, precision machines, toys and plastics, and the like.

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