S-5185N138 1.024" ID x 1.656" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening under dynamic loads, ensuring long-term joint integrity in demanding applications
• Zinc-flake-coated steel construction provides excellent corrosion protection, extending service life in harsh industrial environments
• Rockwell C38 hardness rating delivers exceptional durability and maintains locking force through repeated assembly cycles
• ASME B18.21.1 compliance guarantees dimensional accuracy and reliable performance according to recognized industry standards
• Precise 1.024" ID and 1.656" OD dimensions ensure perfect fit for 1" fasteners, reducing installation time and improving assembly efficiency
• RoHS 3 and REACH compliance meets international environmental regulations, making it suitable for global supply chains
• 0.25" thickness provides optimal spring tension for secure locking without compromising space requirements

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance for industrial assemblies where mechanical shocks and dynamic loads threaten joint integrity. The zinc-flake-coated steel material provides superior corrosion resistance compared to standard plating, making it ideal for outdoor equipment, automotive components, and machinery exposed to environmental elements. With Rockwell C38 hardness, the washer maintains its spring tension through multiple disassembly cycles, reducing replacement frequency in maintenance applications. The split design creates continuous upward pressure against the fastener head and downward pressure against the work surface, effectively preventing rotational loosening in heavy machinery, construction equipment, and transportation systems. Engineered to ASME B18.21.1 standards, this washer ensures dimensional consistency and reliable performance across industrial applications requiring inch-system fasteners.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 1.024" inner diameter, 1.656" outer diameter, and 0.25" thickness, engineered for 1" fasteners. Manufactured according to ASME B18.21.1 standards for dimensional accuracy and performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The zinc-flake coating provides enhanced corrosion protection while maintaining the mechanical properties required for reliable locking performance in industrial applications.