Technical Brief: Non-standard Nuts & T-screws by Wenzhou Riyi
As a professional fastener manufacturer in Wenzhou’s industrial cluster, Wenzhou Riyi Standard Parts Co., Ltd. excels in high-precision standard and non-standard fasteners. This brief focuses on its three core products—non-standard nuts, fine thread T-screws, and titanium T-screws—covering key tech specs and applications, with strict adherence to ISO 9001 standards.
1. Non-standard Nuts: Customized for special equipment and harsh conditions, these nuts replace unavailable standard options. Materials (carbon steel, stainless steel, alloy steel, inconel) are selected by working demands. Key specs: M5-M100 nominal diameter, 0.5-5mm pitch, IT6-IT9 inner hole tolerance. Processed via cold heading and CNC machining, thread precision reaches 6H/6g. Anti-loosening structures are optional for vibration environments, widely used in marine, aerospace, and special machinery.
2. Fine Thread T-screws: Featuring fine pitch (0.5/0.75/1mm) and GB/T 192-compliant profile, they offer high precision and stability. Specs: M4-M30 diameter, 6g thread precision, ≤0.02mm/100mm head-rod verticality. Processed via precision grinding and thread rolling, heat-treated to 4.8-12.9 strength grades. Surface treatment (black oxide, passivation) enhances corrosion resistance. Ideal for CNC machines, precision instruments, enabling 0.01mm positioning accuracy.
3. Titanium T-screws: Made of TC4/TA2 alloy (4.51g/cm³ density, 860-1100MPa tensile strength), they combine light weight, high strength, and corrosion resistance (＜0.01mm/year seawater corrosion). Special machining (coated carbide tools, low-speed threading) ensures quality. Specs: M3-M20 diameter, -200℃ to 400℃ working temp, 10.9 max strength grade. Used in aerospace, marine, and medical fields (biocompatible with ISO 10993).
Wenzhou Riyi delivers stable, high-performance fasteners via scientific material selection and precision processing. Custom solutions and tech data sheets are available. Contact its technical department for inquiries.
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