S-91475A018 0.114" ID x 0.209" OD ASME B18.21.1; MS35338-135 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains consistent spring tension under dynamic loads
• Exceptional corrosion resistance with Passivated 316 Stainless Steel construction for harsh industrial environments
• Optimized dimensional precision with 0.114" ID and 0.209" OD ensuring perfect fit for No. 4 screws
• Enhanced durability achieved through Rockwell C35 hardness for long-term performance under stress
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-135 specifications for reliable engineering applications
• Environmental responsibility with RoHS 3 and REACH compliance for safe use across global markets
• Reduced maintenance requirements through material and design excellence that prevents loosening in critical assemblies

Professional Applications & Engineering Value

This split lock washer delivers exceptional engineering value in applications where vibration-induced loosening compromises assembly integrity. The Passivated 316 Stainless Steel construction provides outstanding corrosion resistance, making it ideal for marine, chemical processing, and outdoor industrial equipment where moisture and corrosive elements are present. The precise 0.114" ID ensures perfect compatibility with No. 4 screws in inch-system assemblies, while the split lock mechanism creates continuous spring tension that counters vibrational forces in machinery, automotive components, and electrical enclosures. This standard split lock washer maintains reliable performance in temperature-fluctuating environments, preventing costly downtime and maintenance in heavy-duty applications across multiple industries.

Specification Summary & Compliance

This precision-engineered split lock washer features exact dimensional specifications with 0.114" inner diameter, 0.209" outer diameter, and 0.025" thickness, manufactured to ASME B18.21.1 and MS35338-135 standards for consistent quality and performance. The component maintains proper fit and function within standard tolerance ranges for inch-system fasteners. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and workplace safety, while the Rockwell C35 hardness specification guarantees mechanical integrity across its service life in industrial applications.