Adopting the highest strength 12.9 (black oxide coating/resin coating) among steel bolts.
The bolts have been heat-treated to meet the mechanical properties of strength grade 12.9 or 10.9 without compromising the function of the seat.
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basic information
【Features】 ○ Reduces the hassle of incorporating washers during assembly work (especially when inserting washers into narrow gaps to tighten screws). ○ Type with flat washers → When you want to increase the tightening surface area, prevent surface tightening marks, or avoid sinking and loosening when the clamped material is soft. ○ Type with spring washers → Excellent anti-loosening effect can be expected depending on the conditions. ○ Type with wave washers → Strong elasticity and greater anti-loosening effect compared to spring washers. ○ Type with both spring washers and flat washers → When strong tightening is not possible due to the relationship of the clamped materials, and you want to utilize the spring's rebound force for anti-loosening effect. ● For more details, please contact us or download the catalog.
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Company information
Founded in 1939, we started with machine manufacturing. Since then, the skills of our craftsmen have been passed down through sweat and trust, further enhanced by technological innovations and wisdom, leading to continuous improvement and development. Our business scope has also expanded to include high-precision fastening components leveraging our machine development capabilities, as well as the processing field of anti-loosening solutions.