Square Washer Grade 8.8 Hot Dip Galvanized Steel for Structural
Manufacturing standard：ISO, GB, JIS, DIN, BS and ANSI standards, or drawings provided by customers.
Materials： iron, carbon steel, alloy steel, copper, stainless steel, plastics, high-temperature alloy, copper alloy, nickel-base alloy, high-strength alloy, corrosion-resistant alloy, etc.
Process： cold heading, punching, turning, milling, wire cutting, etc.
Treatment/Finishing: Brushing、Anodizing、Zinc Plated、Nickel Plated、Sn Plated.
Requirements： No Burrs、Scratches、Dents、Pits
Application： Structural Steel; Metal Building; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: Home Decorating
Packing：bulk in cartons (25kg Max.)+wood Pallet or according to customer special demand
Square washers are widely used in structural and industrial applications for their superior load distribution and edge-hold capability. Compared to standard round washers, square washers provide increased bearing surface, especially useful in wood constructions, heavy-duty bolted joints, and base plate assemblies.
TAIMING, a professional fastener manufacturer and supplier, recommends square washers in Grade 4.8, 8.8, and stainless steel A2-70, depending on the load and corrosion resistance required. Commonly conforming to DIN 436, ASTM F436, and ISO 7094 standards, TAIMING’s square washers are available in sizes ranging from M6 to M36, with custom options for special projects.
Based on internal testing and customer feedback, TAIMING advises using hot-dip galvanized or zinc-plated finishes for outdoor or high-humidity environments. The increased outer dimensions help prevent bolt heads and nuts from pulling through softer materials, especially in timber or composite settings.
TAIMING engineers note that in anchor bolt assemblies, square washers ensure better pressure distribution around base plates, improving long-term joint integrity. When used with anchor rods Grade B7 or 316 stainless steel bolts, they perform reliably under high tension and vibration.
All TAIMING square washers are produced with tight dimensional tolerances and include mill test certifications. Their use in modular structures, bridges, and steel columns has shown improved resistance to mechanical fatigue and environmental stress.
For projects demanding both strength and precision, TAIMING’s square washers are a trusted choice across global construction and engineering industries.
