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 mate...