S-91102A740 0.2" ID x 0.334" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance due to the split lock design that maintains consistent spring tension under dynamic loads
• Enhanced corrosion protection with zinc-plated steel construction for extended service life in industrial environments
• Reliable hardness performance with Rockwell C38 rating ensuring consistent spring action and load distribution
• Precision dimensional compatibility with 0.2" ID specifically engineered for No. 10 screws
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed mechanical performance
• Environmental regulation compliance with RoHS 3 and REACH adherence for safe global usage
• Optimized outer diameter (0.334") providing maximum bearing surface while maintaining compact installation

Professional Applications & Engineering Value

This zinc-plated steel split lock washer delivers critical vibration-resistant performance in demanding industrial applications where fastener security is paramount. The standard split lock design creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loading conditions common in machinery, automotive assemblies, and electrical enclosures. Engineered specifically for No. 10 screw size applications, the precise 0.2" internal diameter ensures perfect fitment while the 0.334" outer diameter provides optimal load distribution. The Rockwell C38 hardness maintains the washer's spring characteristics through repeated compression cycles, preventing loosening in high-vibration environments where standard flat washers would fail. This combination of material properties and mechanical design solves the persistent challenge of maintaining bolt preload in equipment subject to constant motion or thermal cycling.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.2" internal diameter, 0.334" outer diameter, and 0.047" thickness. Manufactured to exacting ASME B18.21.1 standards for dimensional accuracy and mechanical properties, it delivers reliable performance in Class 2A fit applications. The product is fully compliant with RoHS 3 (2015/863/EU) regulations and meets REACH (EC 1907/2006) requirements regarding substance restrictions, ensuring environmental responsibility and global market acceptance.