For all those who are concerned about the quality and cost of mass-produced parts for automobiles, robots, precision equipment, etc.

This example is a bolt for fixing automobile roof rails, made of SWCH45K.

One of the features of this bolt is that the machining method of the tip was reviewed.
Specifically, we proposed that the cutting of the tip be done by pre-applied rolling, and succeeded in reducing costs.

Although not discussed in this report, it is difficult to realize the small-sized brim and stepped seat surface with a header, which would increase costs if the process is not fully considered.

Arai Parts, which operates the "Cold Forging/VA/VE Center," specializes in bolt products with complex shapes, and promises to provide superior products in terms of QCD by proposing the most suitable manufacturing method. Please contact us if you have any questions.