KB nickel-plated cross countersunk head self-tapping screws, flat head and flat tail self-tapping nails, small screws for glasses, M1/M2/M3/M4/M5

The core advantages of nickel-plated countersunk flat-tail self-tapping screws are "concealed and flush appearance, corrosion and rust resistance, precise fastening, and material protection against loosening"

• The countersunk head design is concealed and flush, without occupying additional space. The head features a conical countersunk structure that, after tightening, can be fully embedded into the pre-drilled counterbore of the workpiece, aligning flush with the assembly surface without protrusions. This design ensures that it will not scratch clothing, skin, or internal precision components of equipment (such as home appliance wiring or instrument casings), nor will it damage the appearance and cleanliness of the workpiece. Additionally, the countersunk structure does not occupy additional internal space, making it suitable for assembly scenarios where space and appearance are critical, such as home appliances, electronic devices, and furniture.
• The countersunk head design is concealed and flush, without occupying additional space. The head features a conical countersunk structure that, after tightening, can be fully embedded into the pre-drilled counterbore of the workpiece, aligning flush with the assembly surface without protrusions. This design ensures that it will not scratch clothing, skin, or internal precision components of equipment (such as home appliance wiring or instrument casings), nor will it damage the appearance and cleanliness of the workpiece. Additionally, the countersunk structure does not occupy additional internal space, making it suitable for assembly scenarios where space and appearance are critical, such as home appliances, electronic devices, and furniture
• Nickel plating for protection, corrosion resistance and rust prevention + no plating peeling. The surface nickel plating forms a dense and highly adhesive protective layer, which can isolate from air, moisture, and mild acid-base environments. Its rust resistance is 3-4 times that of ordinary carbon steel screws, suitable for indoor dry, mildly humid environments (such as living rooms, offices, balcony dry areas), with no risk of plating peeling or rusting after long-term use. The nickel plating layer is environmentally friendly and odorless, suitable for scenarios requiring material safety, such as children's products and food contact equipment for auxiliary fixation.

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Shenzhen Huayuanxing Precision Hardware Co., Ltd. is a manufacturer specializing in the development, production, and sales of screw fasteners, with 20 years of industry experience. Huayuanxing screws are characterized by precision, miniaturization, and firmness. The company's existing factory covers an area of over 8,000 square meters, with a finished product warehouse of over 4,000 square meters and a stock inventory of over 3,000 tons. It has successively introduced more than 250 precision production equipment, including cold heading machines, thread rolling machines, and thread milling machines, capable of producing small screws with an outer diameter of 1mm and a length of 3mm, with an average daily production capacity of up to 20 million pieces. Huayuanxing has complete inspection equipment, including salt spray testing machines and 2D imaging detectors. It currently employs more than 50 people, including 8 engineering and technical personnel with 20 years of industry experience