The material is iron and stainless steel! We have a track record with sizes of 4mm, 5mm, and 6mm.
Our company offers "concrete screws" designed to fasten components to concrete and similar materials. These screws feature a cutting edge on the threads, allowing them to be directly screwed into a pre-drilled hole, enabling them to cut and fasten simultaneously. Additionally, they have a special thread shape known as "high-low," which has a significant difference between the peaks and valleys, ensuring a strong grip in concrete. We have proven performance in sizes of 4mm, 5mm, and 6mm. 【Features】 ■ Threads with cutting edges ■ Made from iron and stainless steel ■ Hardened for maintained strength ■ Special thread shape with a significant difference between peaks and valleys, known as high-low ■ Proven performance in sizes of 4mm, 5mm, and 6mm *For more details, please download the PDF or feel free to contact us.
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The products of Koyauchi Fastener Co., Ltd. are used in various industries and fields that form the foundation of everyday life, including construction, civil engineering, automotive, electrical, industrial machinery, toys, medical devices, railway vehicles, and agricultural machinery. In particular, our "non-standard sizes," which are thick and short or thin and long, are well-received by many customers. We aim to contribute even more to the industries and fields that support our daily lives through product development that meets customer needs, in addition to our existing product lineup.