Phillips Countersunk Head Self-Drilling Screw (Phillips Flat Head Self-Drilling Screw)

1. Applicable fields and implementation standards

This product is produced in accordance with Chinese national standard fastener specifications. It is a countersunk head Phillips self-drilling screw. It relies on the countersunk head structure. After locking, the screw head can be completely sunk into the inside the panel, leaving the panel surface flat and without bulges. It is widely used in light steel keel partitions, door and window hardware, furniture metal connectors, light steel ceilings, aluminum alloy accessories, and thin steel sheet interior assembly. It is exported to the hardware and building materials markets of Southeast Asia, the Middle East, and Africa all year round. The product comes with a drill point, eliminating the need for pre-drilling, and meets the dual-use fastening needs of woodworking thin panels and thin steel sheets.

2. Raw materials and production processes

The raw material is high-quality carbon steel, and the entire screw has undergone quenching heat treatment. The drill point cutting edge has sufficient hardness, and the drilling is sharp and will not easily chip or break at the drill point. Production process: Ten processes including rough drawing of raw materials, annealing, phosphating, fine drawing, cold heading, point forming, thread rolling, heat treatment processing, zinc plating, and packaging. The Phillips recesses are well formed and suitable for installation with a Phillips screwdriver, making disassembly and assembly easy. The thread pitch is even, and the screwed-in sheet engagement tightly, making it less likely to cause thread stripping problems. The dimensional tolerances are strictly in line with Chinese national standard parameters.

3. Product style and performance advantages

Hidden countersunk head design: After installation, the screw head is completely embedded in the base material. The surface is smooth and beautiful, and will not protrude and scratch the material. It is the preferred fastening accessory for furniture, interior decoration, and suspended ceilings.

Self-drilling dual-purpose features: The tip drill point can directly drill through 0.5~5mm thin steel sheets, zinc plated iron sheets, and can also self-tap into solid wood and density boards. It is suitable for metal + wood dual-base material assembly.

4. Quality control warehousing and supporting services

All specifications are in stock, regular orders are dispatched within 48 hours, and small-batch samples and full-container export orders can be accepted. The drill point hardness, Phillips recess strength, thread accuracy and coating adhesion are randomly inspected batch by batch before leaving the factory, and defective products such as chipped heads, broken drill tips, and coating peeling off are eliminated. It can be supplied in complete packages with our factory's flat washer and spring washer, providing one-stop fastening accessories; it supports special lengthened and special-shaped countersunk head self-drilling screws according to drawings or samples, and stable production capacity ensures long-term order renewal and replenishment for overseas customers.