Carbon Steel DIN 7964-1990 Hexagon head screws with waisted shank-K end

Hexagon head screws with waisted shank-K end thread specifications range from M2.5 to M24, with a pitch varying from 0.45mm to 3mm. Typically made of carbon steel or stainless steel, screws may feature different coatings, such as electrolytic zinc plating, non-electrolytic zinc flake coating, and others, to enhance corrosion resistance and aesthetic appeal. Surface treatments like blackening are also applied to increase the screws' wear resistance and corrosion resistance.
 
Product Characteristics

• Hexagonal head design: The head of the screw has a hexagonal shape, which is easy to tighten and loosen using tools such as a wrench or screwdriver.This design improves working efficiency and ensures that the screws are not damaged by uneven forces during tightening.
• Non-ejection structure: The rod part of the screw is designed with a special thread or shape to prevent it from slipping out after installation.This structure is especially suitable for occasions that require long-term fastening, such as mechanical equipment, vehicles, building structures, etc.
• L-type long thread: The screw thread part is longer, and the L-shaped design increases the contact area and friction with the connector.This design improves the stability and load bearing capacity of the connection, and is suitable for situations where large tensile and shear forces are required.
• Flat tail design: The screw tails are flat for easy positioning and adjustment during installation and removal.The flat-tail design also reduces interference and damage to the surrounding structure during screw installation.

 
Application
They are widely utilized in connection scenarios requiring high reliability and anti-loosening performance, such as in mechanical equipment, automobile manufacturing, building structures, and other fields.

• Mechanical equipment: It is suitable for the connection and fixing of various mechanical equipment, such as the manufacture and maintenance of vehicles such as automobiles, ships and aircraft. In these areas, screws need to withstand large vibration and impact forces, so they require high strength and durability.
• Building structure: It is suitable for the connection and reinforcement of building structures, such as Bridges and building curtain walls.Screws in these applications need to withstand large tensile and shear forces, and therefore require a high load carrying capacity and stability.
• Electronic equipment: Suitable for the assembly and fixing of electronic equipment, such as computers, mobile phones, etc.In these applications, the screws need to have high accuracy and reliability to ensure the normal operation and stability of the equipment.