Tohatsu
ISO/JIS die springs; Custom springs manufactured to drawing
TOHATSU Springs (Tokyo Hatsujyo Manufacturing) is a Japanese manufacturer of coil die springs and a long-standing standard for demanding applications. The company produces springs according to ISO 10243 and JIS standards, including high-deflection and custom solutions.
TOHATSU is the choice for high-cycle applications where spring replacement causes costly downtime. Material quality and design—such as non-circular wire in JIS springs—deliver high stability and long service life. In practice, TOHATSU is often selected when customers want to “install once and forget.”
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Long service life
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High-cycle applications
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Standards & Compatibilitya
ISO ISO 10243 ensures compatibility with global projects, while JIS standards excel where higher loads are required in limited space.
Product range
