DIN 21346 / PN 82121 – Square head screws
Square head screws compliant with DIN 21346 and PN 82121 are an indispensable solution in the construction and industrial sectors, where stability and reliability of connections are crucial. They are offered in strength classes 5.8, 8.8, and 10.9, making them an ideal choice for applications requiring robust and durable solutions. Thanks to their robust construction, these screws ensure stable connections, even in the most extreme conditions. Their high strength and corrosion resistance, achieved through electroplated zinc [ZN] or thermally diffusion zinc [TZN] coating, make them indispensable in the construction and industrial sectors.
Key Benefits: Square Head Screws
- High Strength: Grades 5.8, 8.8 and 10.9 offered ensure durability and reliability.
- Suitable for extreme conditions: The robust construction guarantees stability in demanding applications.
- Corrosion resistance: Electroplated zinc and thermally diffusion zinc ensure longevity.
- Versatile: Ideal for construction, industrial and engineering applications.
- Quality standards: Compliance with DIN 21346 and PN 82121 for certainty in design.
Specification
| Standard | DIN 21346, PN 82121 |
|---|---|
| Material and Class: | 5.8 / 8.8 / 10.9 |
| Coating | Galvanic zinc [ZN] / Thermo-diffusion zinc [TZN] |
Application and compatibility
Square head screws are ideal for applications in construction and industry where secure connections are required. Thanks to their properties, they are used in building structures, machinery, and projects requiring minimal joint clearance. They are an excellent choice for engineers and designers who prioritize quality and safety in their projects.
FAQ – Frequently Asked Questions
What are the properties of DIN 21346 Square Head Screws?
These screws are characterized by high strength, corrosion resistance and robust construction, making them an ideal choice for harsh environments.
Where is it best to use DIN 21346 screws?
They are ideal for construction and industry, wherever stable and durable connections are required.
What are the differences between bolt strength classes 5.8, 8.8 and 10.9?
They differ mainly in their maximum stress and tensile strength, which affects their use in various projects.








