Cross semi-countersunk head self-tapping nails, often referred to by their GB847 standard, are a specialized type of fastener designed for a variety of applications.
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 divided into A grade and B grade, as well as different mechanical properties grade (such as 4.8 grade, 8.8 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.
Unique Advantages:
1.Self-Tapping Ability: These nails have a drill point that allows them to tap their own threads into pre-drilled holes, eliminating the need for a pre-tapped hole .
2.Material Options: Available in stainless steel (304, 316, 410) and carbon steel, which offer different levels of corrosion resistance and strength. Stainless steel is particularly suitable for environments where corrosion resistance is crucial .
3.Cross Recessed Head: The cross recess provides a better torque transmission compared to a standard slot head, reducing the risk of the nail head camming out during installation .
4.Aesthetics: The semi-countersunk head sits flush with the surface once installed, providing a clean and professional finish .
5.Versatility: Suitable for a wide range of materials including metal, wood, and plastic, making them ideal for various construction and assembly tasks
Scope of
application
Construction: Used for fastening metal sheets, roof panels, and other structural elements together
Automotive: Employed in the assembly of car bodies and other metal components where a strong, secure, and corrosion-resistant fastening is needed
Furniture Making: Ideal for assembling metal frames or when working with materials that are prone to splitting with traditional screws
Appliance Repair: Useful for quick and secure repairs in household appliances that have metal components
Electronics: Can be used in the assembly of electronic devices where a secure and reliable fastening is required
Outdoor Applications: Due to their corrosion resistance, they are often used in outdoor settings such as sheds, fences, and other weather-exposed structures
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.
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.
