Release time：2020-01-16 18:44 Browse：
1. **Extended Half - Tooth Hexagon Socket Screws** - **Design Feature** - These screws have an extended length, which allows for deeper penetration in applications where more reach is required. The half - tooth design means that only part of the screw's shaft has threads. This can be useful in situations where a portion of the screw needs to be inserted into a non - threaded hole for a snug fit, while the threaded part is used to secure the connection. - **Head and Drive** - They are equipped with a hexagon socket head. This type of head is designed to be driven by a hex - key or an Allen wrench, providing a secure and precise way to apply torque during installation and removal. - **Strength Class** - Belonging to the 12.9 class, they possess high tensile strength. The 12.9 rating indicates that these screws can withstand significant forces without breaking or deforming, making them suitable for applications in high - stress environments such as in automotive engines or heavy machinery. 2. **12.9 Class Extension Bolts** - **Function and Design** - Extension bolts are specifically designed to extend the length of a fastening system. They are longer than standard bolts and are used when additional reach is necessary to connect two or more components that are spaced further apart. - **Strength and Durability** - With a 12.9 strength class, they offer exceptional strength. This makes them reliable for use in applications where the joint needs to bear heavy loads, vibrations, or dynamic forces. The high - strength material ensures that the bolts can maintain their integrity over time, even under challenging conditions. - **Installation** - They are typically used in combination with nuts and washers. The bolt is inserted through the holes in the components to be joined, and the nut is then tightened onto the threaded end of the bolt, creating a secure connection. 3. **High - Strength Cylindrical Head Cup Head Screws** - **Head Shape and Function** - Cylindrical head cup head screws have a distinct head shape. The cylindrical head provides a larger bearing surface compared to some other screw head types, which helps distribute the load more evenly when the screw is tightened. The cup - shaped indentation on the underside of the head can be used to hold a ball or to fit into a corresponding recess, providing a self - centering function in some applications. - **Strength Attribute** - Being high - strength screws, they are made from materials that can withstand substantial stress. This makes them suitable for use in applications where a strong and reliable fastening is crucial, such as in industrial equipment, construction machinery, and aerospace components. - **Assembly Applications** - These screws are often used in applications where a flush or semi - flush fit is desired. The cylindrical head can be countersunk or left proud, depending on the design requirements, providing versatility in assembly.
