The DIN 7991 screw, similar to the ISO 10642 standard, also known as countersunk screw with hexagon socket, is a fastening element widely used in various industries thanks to its design that allows an aesthetic finish and a resistant joint when embedded in the surface of the application.
Unlike DIN 913 and DIN 916 Allen studs, the DIN 7991 has a countersunk head which, when screwed in, is flush with the surface, providing a clean and uniform finish. This feature makes it ideal for applications where aesthetics are important, such as in the manufacture of furniture, electronic equipment or automotive components such as car bodies.
Types of socket screws DIN 7991
Like other screws, DIN 7991 is classified according to its mechanical resistance and type of coating. At CHAVESBAO we offer four types of DIN 7991 to suit different needs:
- DIN 7991 10.9 BL: with higher tensile strength, it is suitable for applications requiring higher mechanical strength.
- DIN 7991 10.9 ZP: offers excellent tensile and shear strength.
- DIN 7991 A2 and A4: available in A2 and A4 stainless steel, it is highly corrosion resistant and perfect for wet or aggressive environments.
DIN 7991 countersunk socket screw features
- Countersunk head: allows the screw head to be flush with the surface, providing an aesthetic finish. It is advisable to countersink the hole beforehand.
- Hexagon socket: facilitates tightening and untightening with an Allen key.
- Metric thread: available in metric ISO thread from M3 to M24 to suit different applications.
- High mechanical strength: grade 10.9 offers excellent tensile strength.
- Corrosion resistance: A2 and A4 stainless steels provide good corrosion protection.
Applications of DIN 7991
The DIN 7991 bolt finds application in a wide range of sectors:
- Industry: fastening of components in machinery, such as motors or fans, industrial equipment and metal structures.
- Automotive: fastening of components in car bodies, interiors and fastening systems.
- Construction: fastening of panels, cladding and other elements.
- Furniture: joining of components in furniture and structures.
- Electronics: fastening of components in electronic equipment and housings.
The DIN 7991 screw is a versatile and strong solution for a wide range of applications. Its design with countersunk head and hexagon socket makes it an ideal choice when looking for an aesthetic finish and secure fastening. At CHAVESBAO, we offer a complete range of socket screws to suit your project needs.
Do you need more information or advice about our products? Do not hesitate to contact us. Our sales and technical team will be happy to help you choose the right solution for your project. Contact us!
