Square nut | A2 | DIN 557

The A2 square nut is intended for use in industrial and corrosive environments where stable and secure threaded fastening is required. The product complies with DIN 557 and is used in applications where a square design provides improved grip and reduced rotation during installation. The nut is suitable for professional installations where good corrosion resistance and long service life are essential.

AREA OF USE

The product is used in industry, machine assembly, steel structures, and technical installations. It is intended for applications where secure fastening is required and where the choice of material provides the necessary protection against corrosion and mechanical stress.

TECHNICAL SPECIFICATIONS

Product type: Nut
Product family: Square nut
Material class: A2
Standard: DIN 557
Design: Square
Surface finish: Stainless steel
Environment: Indoor / Outdoor
Delivery unit: Piece

FREQUENTLY ASKED QUESTIONS (FAQ)

What is the advantage of a square nut?
The square shape provides a larger contact surface and improved grip during assembly, which reduces the risk of rotation in certain applications.

What is DIN 557 used for?
DIN 557 is used for square nuts intended for mechanical and industrial fastenings where a square design is required.

Can the nut be used outdoors?
Yes. A2 stainless steel has good corrosion resistance and is suitable for use in normal outdoor environments.

What is the difference between A2 and A4?
A2 is mainly used in normal damp and outdoor environments, while A4 has higher resistance to saltwater and chemically aggressive environments.

Can the square nut be used together with stainless bolts?
Yes. For the best corrosion resistance, it is recommended to use them together with stainless screws or bolts of the corresponding material class.