{"title":"Square washers","description":"\u003cp\u003e\u003cstrong\u003eStainless steel square washer\u003c\/strong\u003e is used to distribute the load over a larger surface area in heavy timber and steel constructions, where a round washer does not provide sufficient support against the substrate.\u003c\/p\u003e\u003cp\u003eAvailable in dimensions according to DIN 436 for adaptation to larger screw and bolt sizes. Suitable for industrial, construction, and marine environments.\u003c\/p\u003e","products":[{"product_id":"fyrkantsbricka-a4","title":"Square washer | A4 | DIN 436","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003cstrong\u003eSquare washer in stainless steel\u003c\/strong\u003e is a durable and reliable washer designed to provide increased stability and optimal load distribution during assembly. It is manufactured from high-quality stainless steel, which ensures long-lasting resistance to corrosion and exposure to chemical environments. The product complies with the international standard DIN 436 and is delivered in packaging adapted to your needs, ready for use in various constructions and industrial applications.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2 class=\"MsoNormal\"\u003eFIELD OF APPLICATION\u003c\/h2\u003e\n\u003cp\u003eThe square washer 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, steel structure installation, and in the marine or chemical industry due to its corrosion resistance.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eProduct type:\u003c\/strong\u003e Square washer\u003cbr\u003e\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 436\u003cbr\u003e\u003cstrong\u003eQuality:\u003c\/strong\u003e A4\/AISI316\u003cbr\u003e\u003cstrong\u003eMaterial class:\u003c\/strong\u003e A4-70\u003cbr\u003e\u003cstrong\u003eThread type:\u003c\/strong\u003e Metric\u003cbr\u003e\u003cstrong\u003eSurface treatment:\u003c\/strong\u003e Untreated\u003c\/p\u003e\n\u003ch2\u003eFREQUENTLY ASKED QUESTIONS (FAQ)\u003c\/h2\u003e\n\u003ch3\u003eWhat is the main advantage of a square washer according to DIN 436 compared to a round plain washer?\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eDIN 436\u003c\/b\u003e specifies heavy-duty, square washers that are specially designed for timber constructions and heavy-duty joints:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMaximum contact surface:\u003c\/b\u003e The square shape provides a significantly larger surface compared to a standard round washer (DIN 125). It distributes the clamping force from the screw head or nut over a larger area.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003ePrevents sinking into the material:\u003c\/b\u003e When mounting in softer materials such as wood, lumber, or composites, the washer prevents the nut or screw head from being pulled into the timber and crushing the wood fibers when the joint is tightened firmly.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eMechanical rotation lock:\u003c\/b\u003e In narrow channels or beam joints, the straight edge of the washer can rest against an edge or shoulder and act as a natural rotation stop during tightening.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eWhy is stainless steel A4 (AISI 316) the optimal material choice for wood and industrial applications?\u003c\/h3\u003e\n\u003cp\u003eTimber constructions and outdoor industrial assembly systems are exposed to constant moisture and chemical influence:\u003c\/p\u003e\n\u003cul\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eDurable corrosion protection:\u003c\/b\u003e A4 steel (1.4401 \/ AISI 316) does not rust in outdoor environments, damp spaces, or upon contact with pressure-treated timber and wood acids.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eNo discoloration of the timber:\u003c\/b\u003e Unlike electro-galvanized washers that eventually corrode and cause ugly, black rust stains in the wood, stainless steel square washers maintain a clean surface throughout their service life.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eHigh bending strength:\u003c\/b\u003e The generous material thickness according to DIN 436 ensures that the washer does not cup or deform when the bolted joint is tightened with high torque.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003ch3\u003eIn which applications is the square washer DIN 436 most often used?\u003c\/h3\u003e\n\u003col start=\"1\"\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eTimber and steel constructions:\u003c\/b\u003e Perfect for frames, roof trusses, glulam beams, piers, and post fastenings where threaded rods (DIN 976) or hexagon bolts pass through heavy timber.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eSill and foundation bolting:\u003c\/b\u003e Widely used between foundation bolts\/expansion bolts and timber sills to create a rigid and permanent anchorage.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli\u003e\n\n\u003cp\u003e\u003cb\u003eIndustrial mounting rails:\u003c\/b\u003e Fits excellently in slots and channels on profile and mounting systems where square washers are required for proper contact.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ol\u003e","brand":"WASI","offers":[{"title":"M10","offer_id":49601582989654,"sku":"101364","price":7.9,"currency_code":"SEK","in_stock":true},{"title":"M12","offer_id":49601583022422,"sku":"101365","price":18.0,"currency_code":"SEK","in_stock":true},{"title":"M16","offer_id":49601596031318,"sku":"101366","price":38.0,"currency_code":"SEK","in_stock":true},{"title":"M20","offer_id":49601596064086,"sku":"101367","price":51.0,"currency_code":"SEK","in_stock":true},{"title":"M22","offer_id":53045499265366,"sku":"103004","price":76.0,"currency_code":"SEK","in_stock":true},{"title":"M24","offer_id":53045499298134,"sku":"103005","price":115.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0776\/7864\/1494\/files\/rostfri-nu-square-washers-din-436.jpg?v=1786180561"},{"product_id":"fyrkantsbricka-a2-din-436","title":"Square washer | A2 | DIN 436","description":"\u003cdiv style=\"text-align: left;\"\u003e\n\n\u003cstrong\u003eSquare washer in A2 stainless steel\u003c\/strong\u003e is a durable and reliable washer, designed to provide increased stability and optimal load distribution during assembly. It is manufactured from high-quality stainless steel, ensuring long-lasting resistance to corrosion and the effects of chemical environments. The product complies with the international standard DIN 436 and is supplied in packaging adapted to your needs, ready for use in various construction and industrial applications.\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch2 class=\"MsoNormal\"\u003eFIELD OF APPLICATION\u003c\/h2\u003e\n\u003cp\u003eThe square washer is primarily used to protect and reinforce fastenings, especially in wood or other softer materials, where a wider contact surface is needed to prevent deformation. It is ideal for construction, installation of steel structures, and in marine or chemical industries due to its corrosion resistance.\u003c\/p\u003e\n\u003ch2 class=\"MsoNormal\"\u003eTECHNICAL SPECIFICATIONS\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eProduct type:\u003c\/strong\u003e Square washer\u003cbr\u003e\u003cstrong\u003eStandard:\u003c\/strong\u003e DIN 436\u003cbr\u003e\u003cstrong\u003eQuality:\u003c\/strong\u003e A2\/AISI304\u003cbr\u003e\u003cstrong\u003eMaterial class:\u003c\/strong\u003e A2-70\u003cbr\u003e\u003cstrong\u003eThread type:\u003c\/strong\u003e Metric\u003cbr\u003e\u003cstrong\u003eSurface treatment:\u003c\/strong\u003e Untreated\u003c\/p\u003e\n\u003ch2\u003eFREQUENTLY ASKED QUESTIONS (FAQ)\u003c\/h2\u003e\n\u003ch3\u003eWhat is a square washer used for?\u003c\/h3\u003e\n\u003cp\u003eA square washer (also known as a truss washer or square plain washer) is used when you need to distribute clamping force over a significantly larger contact area than a standard round flat washer can handle. It is particularly common in wood construction, studs, posts, and load-bearing timber joints to prevent the nut or screw head from digging into the timber when tightened.\u003c\/p\u003e\n\u003ch3\u003eWhy should you choose a square washer in stainless A2 steel?\u003c\/h3\u003e\n\u003cp\u003eA2 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.\u003c\/p\u003e\n\u003ch3\u003eWhat standards usually apply to square washers?\u003c\/h3\u003e\n\u003cp\u003eSquare washers are often manufactured according to standards such as \u003cb\u003eDIN 436\u003c\/b\u003e (square washer for timber construction) or \u003cb\u003eDIN 434 \/ DIN 435\u003c\/b\u003e (taper washers for beams and U-profiles). They are characterized by their thicker material gauge and generous outer dimensions adapted for heavy-duty connections.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"WASI","offers":[{"title":"M10","offer_id":52778634379606,"sku":"102898","price":4.5,"currency_code":"SEK","in_stock":true},{"title":"M12","offer_id":52778634412374,"sku":"102899","price":9.5,"currency_code":"SEK","in_stock":true},{"title":"M16","offer_id":52778634445142,"sku":"102900","price":15.0,"currency_code":"SEK","in_stock":true},{"title":"M20","offer_id":52778634477910,"sku":"102901","price":19.9,"currency_code":"SEK","in_stock":true},{"title":"M24","offer_id":52778639065430,"sku":"102902","price":69.0,"currency_code":"SEK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0776\/7864\/1494\/files\/rostfri-nu-square-washers-stainless-steel.jpg?v=1786180439"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0776\/7864\/1494\/collections\/rostfri-nu-square-washers-stainless-steel.jpg?v=1790150744","url":"https:\/\/rostfri.nu\/en\/collections\/fyrkantsbricka.oembed","provider":"Rostfri.nu","version":"1.0","type":"link"}