The core advantages of nickel-plated round head self-tapping screws with flat tail are "rust resistance, wear resistance, material protection against loosening, convenient installation, and adaptability to soft materials."

1. Nickel plating surface treatment, dual-excellent rust and wear resistance: The surface of the screw undergoes an electroplating nickel process, forming a uniform and dense nickel plating layer (typically 5-10μm thick): strong rust resistance: the nickel plating layer can isolate the air, moisture, and substrate (mostly carbon steel) from contact, preventing rusting in indoor dry, mildly humid environments (such as the interior of household appliances, office equipment) for long-term use, avoiding thread jamming or contamination of workpieces caused by rusting of the carbon steel substrate; high surface hardness: the hardness of the nickel plating layer (HV about 150-200) is higher than that of carbon steel itself, making it less prone to wear on the head slot (cross/straight) during disassembly and assembly, reducing the risk of "slip-off batches", and the surface is smooth and easy to clean, less prone to dust and oil stains. Compared to galvanized screws, nickel-plated screws exhibit a silvery-white metallic luster and a finer texture, making them suitable for applications where a mild appearance is required (such as electronic device casings).
2. The design features a round head with a washer, offering both protection against loosening and a round head structure: The head is a semi-circular sphere, with edges that have been chamfered to be smooth and free of sharp corners. Daily contact will not scratch skin, clothing, or precision components inside equipment (such as circuit boards, plastic buckles), making it especially suitable for assembly scenarios where it is exposed or frequently touched (such as furniture handle fixation, small appliance casings). It comes with a built-in washer: An integrated washer is located beneath the head, eliminating the need for an additional flat washer. Installation is a one-step process: It increases the contact area with the workpiece, evenly distributes tightening pressure, and prevents screws from embedding into soft/thin-walled substrates such as plastic, wood, and thin metal, thus preventing substrate cracking and deformation. The friction between the washer and the workpiece surface enhances the anti-loosening effect, coping with minor vibrations during home appliance operation and furniture use, making it less prone to loosening and more reliable than the combination of "ordinary screws + separate washers".
3. Flat-tail self-tapping thread, strong adaptability for soft material cutting. Flat-tail design: The screw tail is a flat cutting end (not a pointed tip), which, together with the self-tapping thread, can smoothly "cut" out an adaptive thread groove when drilling into soft substrates such as plastic, wood, and thin aluminum plates (≤1mm), avoiding substrate cracking that is easily caused by pointed screws (especially brittle plastics such as ABS and PS). Self-tapping feature: No need for pre-drilling or tapping, a single person can directly screw it into the substrate using a manual/electric screwdriver, greatly saving assembly time. It is suitable for batch scenarios such as splicing plastic casings of electronic devices, hardware fixation of wooden furniture, and assembly of toy parts.
   The "non-penetrating" cutting characteristic of flat tails can also prevent screws from scratching the components on the back side (such as circuit boards and cables) after penetrating the base material, thereby enhancing assembly safety.

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