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ZONFA is one of China’s premier manufacturers of hardware products. We provide customers with standardized, as well as custom fasteners, such as precision screws, machine screws, self-tapping screws, SMES screws, and electronic workpiece contacts. Customers can contact us and order the materials, head types, sizes, and surface treatments they require for their hardware components. ZONFA can provide customization fasteners which satisfy DIN, GB, JIS standards for you.
Electrical Contacts
Custom Screws
Custom Bolts
    2. Applications:
      Custom bolts are a commonly used fastener that utilizes a thread and is used in conjunction with a nut. Bolts are widely used in various mechanical equipment, laboratory instruments, computers, railway tracks, bicycles, cars, and more.
Custom Nuts
    2. Applications:
      When used together with bolts and screws, custom nuts are commonly used in various mechanical equipment, laboratory instruments, computers, railway tracks, bicycles, and cars.
Non-Standard Screw Fasteners
    2. Here at Zonfa, we own and operate high precision screw production equipment and testing equipment, allowing us to offer our customers custom shaped screws, computer fasteners, and non-standard screws. We also offer customized options to meet requirements for size, head, surface treatment, outlook, hardness, materials, and more.

Zhongfa Company is a manufacturer of electrical contacts and micro precision screws. The electrical contacts made of silver and silver oxide materials, applied in AC contactor, circuit breaker, electrical relay and electric switch. Our commitment to excellence make us provide custom made micro screws to meet the quality standards like ISO, DIN, ANSA, BS, JIS, GB, etc. Our wide range of micro precision screws, available with materials of stainless steel, carbon steel, alloy steel and copper, with catalogue covering the range of thread forming screws, thread cutting screws, thread rolling screws and self-drilling screws. Also our products can be made according to the custom size, material, head type and surface treatment in specific needs.