S-98437A115 0.385" ID x 0.55" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening under dynamic loads, ensuring long-term joint integrity
• 18-8 stainless steel construction provides excellent corrosion resistance for demanding industrial environments
• Rockwell C35 hardness delivers exceptional durability and maintains spring tension through repeated cycles
• Precision 0.385" ID and 0.55" OD dimensions ensure perfect fit for 3/8" screw applications
• ASME B18.21.1 compliance guarantees consistent quality and performance to industry standards
• RoHS 3 and REACH compliance meets environmental regulations for global manufacturing applications
• 0.125" thickness provides optimal spring action while maintaining compact installation profile

Professional Applications & Engineering Value

This 18-8 stainless steel split lock washer delivers critical anti-loosening performance in high-vibration environments where fastener security is paramount. The split lock design creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loading conditions common in industrial machinery, automotive assemblies, and heavy equipment. The corrosion-resistant properties of 18-8 stainless steel make it ideal for applications exposed to moisture, chemicals, or outdoor elements, while the Rockwell C35 hardness ensures the washer maintains its spring characteristics without permanent deformation. Engineered specifically for 3/8" screw sizes, this washer provides reliable fastening solutions across manufacturing, construction, and maintenance operations where vibration-induced loosening poses significant safety and operational risks.

Specification Summary & Compliance

This standard split lock washer features precise dimensional specifications including 0.385" inner diameter, 0.55" outer diameter, and 0.125" thickness, manufactured to ASME B18.21.1 standards for consistent performance and interchangeability. The washer demonstrates full compliance with RoHS 3 (2015/863/EU) restrictions on hazardous substances and REACH (EC 1907/2006) regulations regarding chemical safety, making it suitable for global supply chains and environmentally conscious manufacturing operations. Manufactured from 18-8 stainless steel with Rockwell C35 hardness, this washer meets rigorous industrial requirements for corrosion resistance, mechanical strength, and reliable anti-vibration performance in inch system applications.