S-94744A526 0.531" ID x 1.25" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Enhanced Corrosion Resistance: Zinc-plated steel construction provides reliable protection against rust and environmental degradation, extending service life in demanding industrial settings.
• Superior Load Distribution: With a 1.25" OD and 0.531" ID, this washer effectively spreads clamp load, preventing surface damage and maintaining joint integrity under high stress.
• Grade 5 Strength Reliability: Manufactured to Grade 5 standards, ensuring consistent mechanical properties and dependable performance in heavy-duty fastening applications.
• Precision Fit for 1/2" Fasteners: Specifically designed inner diameter guarantees optimal alignment and secure fit with 1/2" screws, reducing installation errors.
• ASME B18.21.1 Compliance: Conforms to established dimensional and quality standards, ensuring interchangeability and reliability in mechanical assemblies.
• Robust Material Durability: Zinc-plated steel offers excellent strength-to-weight ratio, resisting deformation under pressure for long-term fastening security.
• Environmental Regulation Compliance: Meets RoHS 3 and REACH requirements, making it suitable for global supply chains and environmentally conscious manufacturing.

Professional Applications & Engineering Value

This Grade 5 zinc-plated steel flat washer addresses critical engineering challenges in industrial fastening systems. Its zinc plating delivers superior corrosion resistance, essential for machinery exposed to moisture, chemicals, or outdoor elements, thereby reducing maintenance frequency and failure risks. The precise 0.531" ID and 1.25" OD dimensions ensure even pressure distribution, preventing bolt loosening and material indentation in heavy-duty applications such as structural steelwork, automotive assemblies, and manufacturing equipment. Compliant with ASME B18.21.1, it guarantees dimensional accuracy and performance consistency, while its Grade 5 material strength supports high-stress environments, making it a reliable component for engineers prioritizing safety, durability, and regulatory adherence in their designs.

Specification Summary & Compliance

This flat washer features an inner diameter of 0.531", outer diameter of 1.25", and thickness ranging from 0.090" to 0.112", designed for use with 1/2" screws in inch measurement systems. It conforms to the ASME B18.21.1 standard for dimensional requirements and is manufactured from Grade 5 zinc-plated steel. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets current environmental and safety standards for industrial components.