Carbon Steel - Grade A - Grade 4.8 - Zinc Plated
Product Details
Product Name: Yongjing Hardened Hexagon Head with Washer Cross Recessed Self-Drilling Screw
Technical Standard: Customer Drawings / Industry General Standard
Product Grade: Grade A
Performance Grade: Grade 4.8
Material: Carbon Steel
Surface Treatment: Zinc Plated
Product Type: Hexagon Head with Washer, Cross Recessed, Self-Drilling Point
Product Specifications
Detailed product specifications can be provided according to customer requirements, including thread size, length, drill point type and other key parameters.
Product Description
Product Overview
This product is a hardened hexagon head with washer cross recessed self-drilling screw, made of carbon steel with a performance grade of 4.8 and zinc plated surface. It combines two driving methods: hexagon head and cross recess, is equipped with an integral flat washer, and has a sharp self-drilling point. The self-drilling point design can drill holes and tap threads on metal sheets, wood and other materials by itself, realizing quick installation. It is suitable for connection scenarios that require high installation efficiency, multiple tool options and built-in anti-loosening washers.
Core Advantages
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Dual Driving Options: It has two driving methods: hexagon head (which can apply high torque) and cross recess (facilitating quick operation with an electric screwdriver), with flexible installation.
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Integrated Self-Drilling and Tapping: The sharp self-drilling point eliminates the need for pre-drilling, directly drilling and tapping to greatly improve installation efficiency.
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Built-in Washer for Anti-Loosening: Integrated flat washer design increases the bearing area, protects the workpiece surface and helps prevent loosening.
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Hardened and Durable: The self-drilling point and thread part are hardened to improve drilling ability and wear resistance.
Applicable Industries
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Steel Structure Construction and Enclosure: Quick installation of color steel tile roofs, metal wall surfaces, sandwich panels and C/Z purlins.
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Outdoor Facilities and Guardrails: On-site assembly of outdoor billboards, metal guardrails, anti-theft nets and air conditioning brackets.
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Wooden Structure Construction: Occasions requiring quick fastening such as wooden houses, outdoor wooden platforms and wooden fences.
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Machinery Equipment Protective Covers: Installation and fixation of equipment sheet metal protective covers and ventilation ducts.
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Furniture and Shelf Assembly: On-site quick assembly of metal shelves, storage cages and large furniture.
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Containers and Temporary Buildings: Connection of modular buildings such as container houses and prefabricated houses.
Warm Tips
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During installation, it is recommended to select the appropriate screw length and drill point type according to the thickness and hardness of the base material.
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When installing with electric tools, it is recommended to start at a low speed first, and then increase the speed after the drill point is positioned to ensure accurate drilling position.
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The zinc plated layer provides basic rust prevention; if used in high-corrosion environments (such as coastal areas and chemical plants), it is recommended to consider products with higher corrosion protection levels.
