Why do high strength socket head cap screws need to change the grade of the material?

A few days ago, a US company mailed a high strength socket head cap screws and gave him his drawings.

After carefully reviewing their drawings, we asked them to say whether the high strength socket head cap screws should be replaced with the material grade, because the material requirements on the drawings are turned, but the requirements for the screws are It is not necessary to turn it through cold heading. And the price of turned products is also more expensive than cold.

They said that they should talk to the engineer and see if the engineer should change the grade of the material. A few days later, they told us that they could be replaced with the grades of the materials we are talking about to produce high strength socket head cap screws.

After they received the screws, they tested the screws and found that they did meet their requirements.

If you want to customized high strength socket head cap screws please send an email: annie.li@szsst88.com