The GB70.2 standard deals with Hexagon flat round head machine screws (Hexagon flat round head machine screws), which are a type of fasteners with hexagon socket drive slots and flat round heads. These screws are typically used in applications where an attractive and compact fit is required, such as in the manufacture of electronic equipment, mechanical equipment and automobiles.
Stainless Steel (304/316): Offers superior corrosion resistance and is suitable for moist or corrosive environments. The 316 grade has additional molybdenum, providing even better corrosion resistance, especially in marine applications.
Carbon Steel: Provides good strength and is the most common material for bolts. It may require additional surface treatments like galvanizing for increased corrosion resistance.
Alloy Steel: Offers enhanced strength and durability. It is often used in high-stress applications where high tensile strength is required.
Advantage:
Hex Drive: The hex drive design provides a compact drive that allows tightening and loosening with an Allen key or Allen wrench, ensuring ease of installation and fastener security. Cylindrical Head Design: Cylindrical heads are suitable for applications that require the head of the screw to be flush with or slightly below the surface, providing a neat appearance. Semi-circular projection: The semi-circular projection of the head (button head) increases the torque-carrying capacity of the screw while providing a better visual appearance. High Strength Materials: Typically made of high strength steel, such as performance grade 12.9 carbon steel or A2-70 stainless steel, with good mechanical properties and corrosion resistance.
Scope of Application
Mechanical Manufacturing: In the field of mechanical manufacturing, it is used to fix rotating or sliding parts such as gears, bearings and bushings. Automotive industry: in the engine, gearbox and other critical parts of automobiles to ensure the correct positioning and fixation of parts. Electrical equipment: In electrical equipment, used to keep electrical connectors and terminals in place and prevent loosening due to vibration. Aerospace: in the aerospace sector, to ensure the precise installation and fixing of critical components to withstand extreme operating conditions.
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.
