S-91475A380 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 constant tension under dynamic loads
• Exceptional corrosion protection with Black-Oxide 316 Stainless Steel construction for harsh industrial environments
• Optimized dimensional compatibility with precise 0.114" ID and 0.209" OD ensuring perfect fit for No. 4 screws
• Enhanced durability from Rockwell C35 hardness providing reliable performance under repeated stress
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-135 specifications for quality assurance
• Environmental responsibility with RoHS 3 and REACH compliance for global regulatory acceptance
• Consistent spring action from standard split lock design that prevents loosening in high-vibration applications

Professional Applications & Engineering Value

This split lock washer delivers critical vibration resistance in demanding industrial applications where fastener security is paramount. The Black-Oxide 316 Stainless Steel construction provides exceptional corrosion resistance, making it ideal for marine, chemical processing, and outdoor equipment applications. The precise 0.114" ID and 0.209" OD dimensions ensure perfect compatibility with No. 4 screws, while the split lock design creates constant spring tension that prevents loosening under dynamic loads. Engineered to meet ASME B18.21.1 and MS35338-135 standards, this washer maintains reliable performance in machinery, electrical enclosures, and automotive assemblies where vibration-induced failure is a constant concern. The combination of Rockwell C35 hardness and precise manufacturing ensures consistent performance across high-volume industrial applications.

Specification Summary & Compliance

This split lock washer features precise inch dimensions with 0.114" internal diameter, 0.209" outer diameter, and 0.025" thickness, specifically engineered for No. 4 screw applications. Manufactured to ASME B18.21.1 and MS35338-135 specifications, ensuring dimensional accuracy and performance reliability. The washer is fully RoHS 3 (2015/863/EU) Compliant and REACH (EC 1907/2006) Compliant, meeting the latest environmental regulations for industrial components. The standard split lock design provides consistent spring action while the Black-Oxide 316 Stainless Steel material offers superior corrosion resistance for long-term reliability in demanding environments.