S-94744A525 0.531" ID x 1" OD ASME B18.21.1 ASME Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with zinc-plated steel construction, extending service life in harsh industrial environments.
• Reliable load distribution thanks to precise 1" OD and 0.531" ID, minimizing surface damage and loosening under stress.
• Enhanced durability from Grade 5 strength classification, ensuring consistent performance in demanding applications.
• Guaranteed dimensional accuracy per ASME B18.21.1 standards, providing secure fit with 1/2" screws and reducing assembly errors.
• Environmental compliance with RoHS 3 and REACH regulations, making them safe for global supply chains and sensitive industries.
• Versatile thickness range (0.056"–0.071") accommodates slight variations, improving adaptability in diverse fastening setups.

Professional Applications & Engineering Value

These zinc-plated steel flat washers are engineered to address common industrial challenges like galvanic corrosion, uneven pressure distribution, and fastener failure. The Grade 5 material ensures high tensile strength, while the ASME B18.21.1 compliant dimensions (0.531" ID, 1" OD) provide exact alignment with 1/2" screws, preventing misalignment and reducing wear on connected components. Ideal for heavy-duty machinery, construction frameworks, and automotive assemblies, they offer a cost-effective solution to maintain joint integrity, resist environmental degradation, and meet stringent RoHS and REACH standards for safe, long-lasting performance.

Specification Summary & Compliance

This flat washer adheres to ASME B18.21.1 specifications with an inner diameter of 0.531", outer diameter of 1", and thickness ranging from 0.056" to 0.071". Manufactured from zinc-plated steel in the inch system, it is designed for use with 1/2" screw sizes and complies with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and material reliability.