S-91118A120 0.385" ID x 0.68" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with standard split lock design for secure fastening in high-motion environments
• Exceptional corrosion resistance provided by K500 Nickel material for extended service life in harsh conditions
• Precise dimensional fit with 0.385" ID and 0.68" OD ensuring proper alignment with 3/8" fasteners
• Industry-standard compliance with ASME B18.21.1 specifications for reliable performance and interchangeability
• Environmental regulation compliance with RoHS 3 and REACH standards for safe use in regulated industries
• Optimized thickness range (0.094-0.115") providing consistent spring tension and reliable locking action
• Durable construction maintains locking performance through repeated assembly and disassembly cycles

Professional Applications & Engineering Value

This K500 Nickel Split Lock Washer delivers critical engineering solutions for industrial applications where vibration-induced loosening poses significant operational risks. The standard split lock washer design creates continuous spring tension that compensates for thermal expansion and mechanical stress, while the K500 Nickel material offers outstanding corrosion resistance in chemical processing, marine, and high-temperature environments. The precise 3/8" screw size compatibility ensures proper fitment in assembly operations, making it ideal for machinery, equipment manufacturing, and infrastructure projects requiring reliable vibration-resistant fastening. The combination of material properties and mechanical design addresses common failure points in dynamic loading conditions, providing maintenance-free performance throughout the product lifecycle.

Specification Summary & Compliance

This split lock washer features inch system dimensions with 0.385" internal diameter, 0.68" outer diameter, and thickness ranging from 0.094" to 0.115" for consistent performance. Manufactured to ASME B18.21.1 standards, it ensures dimensional accuracy and mechanical properties for reliable fastening applications. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current environmental and safety requirements for industrial components. Designed specifically for 3/8" fasteners, this standard split lock washer provides reliable locking action without requiring hardness ratings for general industrial use.