Square washer | A2 | DIN 436
Square washer in A2 stainless steel is a durable and reliable washer, designed to provide increased stability and optimal load distribution during installation. It is manufactured from high-quality stainless steel, ensuring long-lasting resistance to corrosion and the effects of moisture and weather. The product complies with the DIN 436 standard and is delivered in packaging adapted to your needs, ready for use in various construction and industrial applications.
AREA OF USE
The square washer according to DIN 436 is primarily used to protect and reinforce fastenings, especially in wood or other softer materials, where a wider contact surface is needed to avoid deformation. It is ideal for construction, the installation of steel structures, and outdoor projects due to its corrosion resistance. For marine or chemically aggressive environments, acid-proof A4 is recommended.
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TECHNICAL SPECIFICATIONS
Product type: Square washer
Standard: DIN 436
Quality: A2 / AISI 304
Hardness class: 200 HV
Surface treatment: Untreated
FREQUENTLY ASKED QUESTIONS (FAQ)
What is a square washer used for?
A square washer is used when you need to distribute the clamping force over a significantly larger contact area than a standard round plain washer can handle. It is particularly common in timber construction, studs, posts, and load-bearing wood connections to prevent the nut or screw head from digging into the wood when tightened.
Why choose a square washer in A2 stainless steel?
A2 steel (AISI 304 / 1.4301) provides excellent and long-lasting corrosion protection in all common outdoor environments. When building fences, deck frames, pergolas, or other outdoor wooden structures, the A2 washer prevents unsightly rust stains and runoff on the wood, while maintaining its load-bearing capacity over time.
Which standards usually apply to square washers?
Square washers are often manufactured according to standards such as DIN 436 (square washer for timber construction) or DIN 434 / DIN 435 (taper washers for U- and I-beams). They are characterized by their thicker material gauge and generous outer dimensions adapted for heavy-duty connections.