7 inch long screws

When the length of the 7 inch long screws exceeds the standard size and even exceeds several tens of times the standard size, the straightness of the long screw is difficult to guarantee, especially the extra long extra screw of more than 1 meter. The diameter is between the M5-M8, and the long screws are easier to bend, which is why the straightness of the long screws purchased by many purchasers cannot be guaranteed. So how is the long screw diameter guaranteed?

The longer the long screw is, the easier it is to bend. Is there any way to ensure the straightness of the 7 inch long screws? The reason why long screws are easy to bend, in addition to the length of the screws is too long, there is another reason is the material of the long screws, we know that there are many materials for the screws, commonly used stainless steel, iron, aluminum, copper, titanium, their metal The non-toxic content is different and the material characteristics are different.

The material of the stainless steel screw is slightly soft. When the stainless steel screw material is used as the long screw, and the length of the screw reaches a certain length, the screw will be easily bent, although sometimes the naked eye can not see. But when the screw is placed flat on the table, it is easy to find that the straightness of the screw is not enough.

Therefore, some customers require 7 inch long screws to be hardened with carbon steel to ensure the straightness of the screws. However, many long screws produced by many screw manufacturers cannot be molded once, and the welding process is used for production. Therefore, after the screw production is completed, it cannot be Hardened heat treatment process, and the long screws after welding are easy to break.

Shi Shi Tong screw manufacturers have been producing long screws for 22 years. They have professional one-time forming equipment and can customize ultra-long and long screws below m16 according to customer requirements. The strength can reach 8.8, 10.9, 12.9, ensuring the straightness of the long screws.

If you want to customized 7 inch long screws please send an email: annie.li@szsst88.com