Manufacturing automobile parts by advanced micro-controlled heading techniques

Quality Assurance

Quality Assurance

Providing safety to Global Society with Uncompromising Quality Control


The various parts produced at Fuserashi are assembled by our customers into larger components.
At Fuserashi, we believe our parts produce value only when the finished product is delivered to the end user.
Each part fulfills a critical role and acts as an important part of the whole.
That is why we focus on constantly producing parts consistent with the required functions and features.
During our entire process—from the development stage to production—Fuserashi carries out quality assurance activities using strict evaluation standards.

Quality Control System

By building a comprehensive ‘Quality Control System’ centered on our Quality Control Department, Fuserashi responds to the drastically changing global environment and strives to offer high-quality and high value-added products to satisfy customer demands.

Quality Policy

Fuserashi improves customer satisfaction and reliability by accurately grasping the customer’s needs and supplying safe products that customers are eager to purchase. We also continue to uphold our company creed of being ‘dedicated to continuous progress.' We aim to secure the happiness of our employees, achieve perpetual growth as a business organization, and provide contributions to local communities, industries, and customers – this is our management principle.
To this end, all of our employees work towards establishing, operating and improving the quality management system and to clarify rights and duties, while aspiring to establish, operate and improve standardized processes.

An Excellent Quality Control System

We always conduct thorough checks and inspections for each process based on the customer's viewpoint.

Inspection equipment

For assessment inspection of thread and automotive parts


Vibration Tester

After giving repeated shocks at a right angle to the axis of bolts and nuts fixed to vibration barrels, we inspect whether the bolts and nuts have become loosened.


Torque tension tester

This equipment checks nuts’ tightening torque, axial tension, thread torque, bearing surface friction, thread-friction etc. Nuts and bolts are usually tightened by applying specified torques. This equipment can inspect nuts to a maximum nominal value of M50.


Universal load tester

Combining crosshead motions with a variety of jigs, this tester can apply various kinds of torsion tension, compression,bending, and shearing to testing samples in order to detect the respective stress via a load cell.

Precision measuring equipment

inspection equipment for checking required high-functions and features.


3D Coordinate Measuring Machine

Coordinate values of X, Y and Z can be measured. A scanning probe enables the quick collection and calculation of data on the outlines and shapes of all products, including tools with complex forms, and evaluates their geometric characteristics.



By tracing the surface of measurement samples with a sensing pin, the outline can be magnified and recorded.
The sensing pin can move along the outline of samples, and this instrument can measure any angle, radii, or level difference in products. Moreover, it is possible to calculate fictional points and collate the data with design specifications.


Surface Roughness Checker

This instrument quantifies the roughness of surfaces for machined products using a prescribed analyzing method.
In order to accurately measure roughness, the shape of the sensing pin, measurement force, filter and the parameter definition are strictly set according to product specifications.

Daily Inspection