S-91118A128 0.512" ID x 0.869" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior corrosion resistance with K500 Nickel material for extended service life in harsh environments
• Maximum vibration resistance through split lock design that maintains consistent tension under dynamic loads
• Precise dimensional fit with 0.512" ID and 0.869" OD ensuring proper alignment with 1/2" fasteners
• Heavy-duty construction with 0.125-0.151" thickness providing reliable performance in demanding applications
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental regulation compliance with RoHS 3 and REACH certification for global industrial use
• Standard split lock configuration offering proven reliability and easy installation across various assemblies

Professional Applications & Engineering Value

Engineered for demanding industrial environments, this K500 Nickel Split Lock Washer delivers exceptional performance where corrosion resistance and vibration control are critical. The nickel alloy construction provides superior protection against chemical exposure and atmospheric corrosion, making it ideal for marine, chemical processing, and offshore applications. The split lock washer design creates continuous spring tension that compensates for thermal expansion, material relaxation, and vibration-induced loosening. This ASME B18.21.1 compliant component ensures reliable fastening in heavy machinery, power generation equipment, and structural assemblies where fastener integrity cannot be compromised. The precise 1/2" size compatibility and standardized dimensions guarantee proper fit and function in both maintenance and new construction projects.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.512" inner diameter, 0.869" outer diameter, and thickness ranging from 0.125" to 0.151" for 1/2" screw size applications. Manufactured to ASME B18.21.1 standards, it ensures dimensional accuracy and performance reliability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and substance restriction requirements for industrial components. The standard split lock washer type provides consistent performance across various applications while maintaining regulatory compliance for global distribution and use.