特発三協製作所 Company Profile

Custom processing manufacturer of precision thin plate springs and wave washers.

We will bring to life the idea of 'Can you make a spring like this?' 'Thin plate springs' are not often visible in everyday life, but they are incorporated into various products, playing a crucial role as 'precision components' from within. 'Cars,' 'computers,' 'DVD players,' 'water heaters,' and many other precision machines do not exclude the use of 'thin plate springs.' At Tokuhatsu Sankyo Seisakusho, we shape our customers' ideas of 'Can you make a spring like this?' in pursuit of new possibilities for thin plate springs, including prototypes and mass-produced items. We manufacture thin plate springs with improved work efficiency, high precision, and low cost through 'multi-forming' and 'progressive press' techniques, starting from a minimum thickness of 0.05mm. Wave washers and disc springs can have load calculations performed in-house. Please feel free to inquire. Available materials: Stainless steel (SUS301, SUS304) / Special steel (SK85, SAE1060) / Phosphor bronze (C5210) / Beryllium copper (C1720) and others upon consultation. ISO certification obtained: ISO14001:2015, certification renewed in November 2017 ISO9001:2015, certification renewed in December 2017.