日本特殊螺旋工業 List of Products and Services

We would like to introduce our manufacturing technology, "rolling processing." By applying high pressure with precision-ground rolling dies, a fine hardened layer is formed on the surface of the screws, preventing the drawbacks of titanium bolts, such as galling and seizure. Additionally, because rolled screws undergo plastic deformation that does not disrupt the material's structure, they do not compromise the inherent strength of the material. In contrast, cutting screws disrupt the material's structure, leading to reduced fracture toughness and increased crack propagation speed. The screw parts of our products correspond to JIS B 0205 (Grade 2), JIS B 0207 (Grade 2), JIS B 0206 (2A), and JIS B 0208 (2A). We can accommodate sizes from M3×0.5 to M42×4.5. 【Features】 ■ Formation of a fine hardened layer on the screw surface ■ Prevention of galling and seizure ■ Rolled screws undergo plastic deformation without disrupting the material's structure ■ Preservation of the material's inherent strength *For more details, please refer to the related links or feel free to contact us.

• alloy

We would like to introduce our manufacturing technology and cutting processing of difficult-to-cut materials. We utilize cutting technology for special alloy steels such as Inconel 600, 700, 800, Hastelloy B, C, zirconium, and Monel to process TAB6400. In the case of TAB6400, we have successfully achieved deep hole machining, which is considered particularly challenging. Our machining achievements include deep hole processing with a depth of 40 times the hole diameter, such as φ6×240L to φ20×260L. Additionally, we specify a surface roughness of Rz3.6 or less (effectively Rz2.5) across all products, demonstrating our cutting technology's high aesthetic appeal that resonates with people. 【Features】 ■ Processing TAB6400 using cutting technology for special alloy steels ■ Successful deep hole machining in TAB6400, which is considered particularly difficult ■ Astonishing deep hole machining achievements with depths of up to 40 times the hole diameter, such as φ6×240L to φ20×260L ■ Cutting technology with high aesthetic appeal that resonates with people *For more details, please refer to the related links or feel free to contact us.

• alloy

We would like to introduce our manufacturing technology, "forging." The TAB6400 alloy undergoes forging in the alpha-beta phase region to achieve excellent mechanical properties, which mandates the formation of equiaxed alpha structure. However, when the meticulously manufactured TAB6400 alloy is forged, it results in a very fine needle-like alpha structure, which is recognized for its superiority in terms of fracture toughness, crack propagation rate, and creep resistance. As representative products of forging, it is used in the pressure hull of the Deep Sea 6500 and in jet engine components. 【Features】 ■ Forging meticulously manufactured TAB6400 alloy results in a very fine needle-like alpha structure ■ Superior in terms of fracture toughness, crack propagation rate, and creep resistance ■ Used in the pressure hull of the Deep Sea 6500 and in jet engine components *For more details, please refer to the related links or feel free to contact us.

• alloy

We would like to introduce the materials used by our company. The pure titanium raw materials refined by two domestic manufacturers are globally trusted as the JAPAN brand and have secured a significant market share. These raw materials are blended with aluminum and vanadium by domestic steel manufacturers to produce round bar materials. This material is designated as TAB6400 under JIS standards and is used in aerospace, medical, and industrial equipment, unlike the easily obtainable overseas Ti-6A1-4V. We also use imported difficult-to-machine materials (such as nickel alloys). 【TAB6400 Features】 ■ Forms a strong non-conductive film on the surface ■ Corrosion-resistant in seawater, comparable to platinum ■ Contains extremely low impurities, compliant with "Green Procurement" and "RoHS Directive" ■ Forms a strong and stable oxide film on the surface ■ Does not cause electrolytic corrosion *For more details, please refer to the related links or feel free to contact us.

• alloy

Using Hastelloy C276 equivalent material, ALLOYC276 Please consult us for various steel materials such as Inconel 600 and SUS630 Mill sheet support available Thread rolling Compatible with metric and inch standards. Can accommodate UNC, UNF, G (PF), R (PT), NPT, etc. Custom sizes not conforming to JIS standards are also accepted We can provide estimates and manufacturing based on drawings for square head bolts, hollow sets, pipe plugs, etc. Processing of supplied materials is also possible.

• bolt

Titanium alloy bolts and nuts made from the highest-grade titanium alloy TAB6400 produced by a domestic steel manufacturer. The specific gravity is about 60% of iron, and it has tensile strength equivalent to SCM435 (chromoly steel). Pursuing "break resistance," "bend resistance," and "flexibility," the design is meticulously crafted for ease of use, and it has gained support for its beauty that surpasses industrial products. They can be purchased even as a single piece.

• nut
• bolt
• Processing Contract