S-99041A136 1.812" ID Square Washers

Key Features & Benefits at a Glance

• Enhanced Load Distribution: The 4" square shape provides a larger surface area, effectively spreading pressure and preventing surface damage in heavy-duty applications.
• Superior Corrosion Resistance: Zinc-plated steel construction offers excellent protection against rust and corrosion, extending the washer's service life in harsh environments.
• Exceptional Mechanical Strength: With a Rockwell B40 hardness, this washer maintains its form and function under high stress and vibration, ensuring long-term reliability.
• Precise Fit and Ease of Installation: The 1.812" inner diameter is accurately sized for a perfect fit with 1 3/4" screws, streamlining assembly processes.
• Robust Structural Support: A substantial thickness of 0.220-0.280" provides the necessary rigidity to handle significant loads without deformation.
• Compliance and Safety Assurance: Meets RoHS 3 and REACH standards, ensuring the product is safe for use and environmentally responsible.
• Versatile Inch System Compatibility: Designed to the inch measurement system, making it ideal for a wide range of North American industrial and construction specifications.

Professional Applications & Engineering Value

This heavy-duty square washer is engineered to solve critical challenges in industrial fastening, such as joint failure and material fatigue. Its zinc-plated steel material provides a durable barrier against environmental factors, which is vital for outdoor construction, machinery assembly, and structural frameworks. The large, 4-inch square design significantly increases the bearing surface, effectively distributing clamp load and reducing the risk of embedment in softer materials like wood or composite structures. Paired with a 1.812" ID for precise alignment with 1 3/4" screws, it ensures a secure and stable connection that withstands dynamic loads and vibrations. This makes it an indispensable component for engineers and procurement specialists seeking reliable industrial washers that enhance the integrity and longevity of their assemblies.

Specification Summary & Compliance

This square washer conforms to standard inch dimensions with an Inner Diameter of 1.812", a Width of 4", and a Thickness range of 0.220-0.280". It is manufactured from zinc-plated steel with a material hardness of Rockwell B40. The product is fully compliant with RoHS 3 (2015/863/EU) under exemption 6(a) and is REACH (EC 1907/2006) compliant, adhering to the latest environmental and safety regulations for industrial components.