Blue-White Zinc Plated Winged Countersunk Head Self-Drilling Screw

1. Applicable fields and product standards

This product is a clip-on Phillips countersunk head self-drilling screw. After the countersunk head is installed, the screw head is completely embedded in the board, and the surface is smooth and beautiful. The shaft is equipped with limit lugs to control the drilling depth and avoid drilling through thin panels. It is mostly used for the assembly of light steel keel partition walls, door and window hardware, interior thin steel sheets, and furniture iron connectors. It is widely used in indoor home decoration and mechanical and electrical equipment assembly. It comes with its own drill point and eliminates the need for pre-drilling holes, taking into account the fastening of thin steel sheets and wooden plates. The products have been exported to the building materials markets in Southeast Asia, the Middle East and Africa for a long time.

2. Material Selection and Production Process

Selected raw materials from large steel mills, the drill point cutting edge has strong hardness, and the drilling is sharp and resistant to chipping or break at the drill point. Production process: rough drawing of raw materials, annealing, phosphating, fine drawing, cold heading, point forming, thread rolling, point forming, heat treatment, heat treatment, zinc plating, washer assembly and packaging. The limit lugs and screw are integrally formed, with precise dimensions; the cross-groove groove is standard and suitable for conventional cross-bit bits, making it less likely to slip and recess damage during construction.

3. Product core advantages

Clamp ear limiter to prevent over-drilling: the limiter bumps on both sides of the screw will automatically limit the position when drilling to the specified depth, preventing drilling of thin iron sheets and gypsum boards, and reducing construction scrap losses.

Concealed fastening of countersunk head: After the tapered countersunk head is tightened, it sinks completely into the base material. There is no protrusion on the panel surface. Later decoration and putty are not affected. It is preferred for home decoration and interior decoration.

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, clip lug molding dimensions, thread accuracy, and coating adhesion are inspected item by item before leaving the factory, and defective products with chipped tips and defective coatings are eliminated. It can be used with conventional countersunk head drill point and self-tapping screw complete sets for shipment, and one-stop fastening kits are provided; it supports customized and lengthened nonstandard self-drilling screws according to incoming samples, stabilizing production capacity and ensuring long-term replenishment.