GB407 is a Chinese national standard that refers to Cross Recessed Pan Head Tapping Screws, a type of self-tapping screw with a large flat head design that provides a large contact area to help prevent head damage and is less likely to be deformed during installation, which has gained popularity in a variety of applications in recent years.
Material: including carbon steel, alloy steel, stainless steel (such as 304, 316, 316L, etc.) and other materials, the specific selection depends on the working environment and application requirements.
Grade: The product grade is different mechanical properties grade (such as 4.8 grade, 8.8 grade, 10.9 grade,A2-70, etc.), these grades reflect the tensile strength, yield strength and other mechanical properties of the bolt. Different grades are suitable for different load bearing requirements and working environments.
Advantage:
Large flat head design: provides a large contact area, which helps to spread the pressure during fastening and reduce damage to the material. Self-tapping threads: capable of forming its own threads in the connected material without the need for pre-drilling or tapping, improving assembly efficiency. High-strength materials: usually made of high-strength steel, with good mechanical properties and corrosion resistance. Aesthetics: The large flat head design allows the screw to be flush with the surface of the connected part after installation, which is suitable for occasions where the appearance of flatness is required. Easy to install: The cross slot design allows the screws to be installed and removed with a common Phillips screwdriver, providing good torque transfer.
Scope of Application
Construction industry: for the joining of metal structures, sheet metal or plastic materials, e.g. for the assembly of roofs, walls and partitions. Furniture manufacturing: used in the assembly of furniture to join parts made of wood or other materials for fast and aesthetic fixing. Automotive industry: used in the interior decoration of cars and in the assembly of certain non-structural parts for fast assembly and maintenance. Machinery and equipment manufacturing: used in the assembly and maintenance of machinery and equipment to connect and fix various components.
Quality Certification
Hebei Bentley is ISO9001:2015 certified and equipped with relevant certificates for quality assurance. Due to its specific dimensions and performance levels, it is suitable for a wide range of industrial and commercial scenarios including, but not limited to: machine building, construction work, transport, energy industry, timber frame connections.
Quality inspection
Bentley has invested a huge amount of money to builda product testing laboratory, equipped with importedhigh-end instruments:such as thread comprehensivescanners, high temperature tensile testing machines,high frequency fatigue testing machines, etc., to ensurethat all products are strictly tested before leaving thewarehouse to ensure the reliability of customers duringuse.
