Why Is The Fastener Not Hard Enough？

With the improvement of social demand, the performance quality of fasteners is also improving, but there are still many users who will ask why some fasteners are not hard enough. This may be because there are some defects in the fastener handling process that result in the fastener not being stiff enough.

So, what specifically causes fasteners to be less rigid? As a professional fastener manufacturer, Xinchi Fastener Company is pleased to tell you the main reasons.

Underheat of fasteners: The cause of underheat is low heating temperature or insufficient holding time.

Overheat of fasteners: excessive carbon and alloying elements dissolved in overheated austenite.

Insufficient cooling rate: The workpiece in the quenching process due to the cooling rate is not enough. Or it is caused by the transformation of part of austenite to pearlite, because of the improper selection of cooling medium.

Improper operation: such as double liquid quenching in the water staying too short.

As a one-stop fastener company, we can provide a wide range of fasteners including stainless steel nuts, carbon steel nuts, 4 prong t nuts, bolts, screws, washers, and so on. Non-standard custom fasteners are also available as long as you provide the corresponding requirements and drawings. If you want to wholesale fasteners or want to consult fastener-related knowledge, such as bolt hardness or screw hardness and so on, please contact us, and our experienced service team will reply to you as soon as possible.