Release time：2020-01-16 18:44 Browse：
### 1. **Product Standards and Specifications** These hexagon socket cap head screws with pre - assembled washers conform to the DIN912 standard, ensuring interchangeability and reliability in assembly. Available in metric sizes ranging from M3 to M10, they cover a wide range of fastening requirements. ### 2. **Material Composition** Constructed from high - quality SS 304 and SS 316 stainless steel. SS 304, with its 18 - 20% chromium and 8 - 10.5% nickel content, offers excellent corrosion resistance in general environments. SS 316, containing additional molybdenum (2 - 3%), provides superior resistance to harsh chemicals, saltwater, and higher - temperature applications. ### 3. **Design Features** - **Head Design**: Feature a cylindrical hexagon socket cap head, which allows for high - torque transmission when using Allen keys or socket wrenches. The socket design reduces the risk of cam - out during tightening and loosening. - **Washer Assembly**: Pre - assembled with washers to evenly distribute the clamping force, prevent damage to the mating surface, and reduce the risk of loosening due to vibration. - **Thread**: Have a full - or partial - thread design depending on the application needs, with fine - pitch metric threads that ensure a secure and precise fit. ### 4. **Surface Finish** Come in a plain hex finish, which showcases the natural appearance of the stainless steel. The plain finish also provides a basic level of corrosion protection inherent to the stainless steel material. It can be further customized with additional coatings like passivation (for enhanced corrosion resistance) or PTFE coating (for reduced friction) upon request. ### 5. **Applications** - **Industrial Machinery**: Suitable for assembling various components in industrial equipment, where high strength and corrosion resistance are required. - **Electronics**: Used in the assembly of electronic devices due to their non - magnetic properties (especially SS 304) and ability to withstand the environmental conditions within electronic enclosures. - **Food and Beverage Industry**: SS 316 variants are ideal for this industry, as they meet strict hygiene standards and can resist corrosion from cleaning agents and food acids. - **Marine and Outdoor Applications**: Due to their corrosion - resistant properties, especially SS 316, these screws are well - suited for use in marine environments, outdoor furniture, and structures exposed to the elements. ### 6. **Quality Assurance** - **Testing**: Undergo rigorous quality control processes, including tensile strength testing to ensure they meet or exceed the minimum requirements for SS 304 and SS 316 materials. Threads are inspected for accuracy using go/no - go gauges, and the dimensions of the head and shank are verified against the DIN912 standard. - **Certifications**: May come with certifications such as RoHS compliance (ensuring they are free from hazardous substances) and material test reports (MTRs) that detail the chemical composition and mechanical properties of the stainless steel used. ### 7. **Packaging and Supply** - **Packaging**: Typically packaged in quantities suitable for industrial use, such as boxes of 500 or 1000 pieces, with moisture - resistant packaging to protect the stainless steel from rust during storage and transportation. - **Supply**: Available for both small - scale orders and large - volume wholesale purchases. Customized orders, including specific lengths, thread types, or special markings, can also be accommodated with a defined lead time.
