S-91102A031 0.385" ID x 0.68" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains constant tension and prevents fastener loosening in high-stress applications
• Enhanced corrosion protection with zinc-plated steel construction, extending service life in demanding industrial environments
• Precise fit for 3/8" fasteners with 0.385" inner diameter ensuring secure installation and optimal performance
• Exceptional durability with Rockwell C38 hardness rating that withstands repeated loading cycles without deformation
• Reliable compliance with ASME B18.21.1 standards, guaranteeing consistent quality and dimensional accuracy
• Environmental responsibility through RoHS 3 and REACH compliance, meeting strict international regulatory requirements
• Optimized load distribution with 0.68" outer diameter and 0.094" thickness for balanced pressure across fastened surfaces

Professional Applications & Engineering Value

This zinc-plated steel split lock washer delivers critical vibration resistance in industrial applications where fastener security is paramount. The standard split lock design creates continuous spring tension that counters rotational forces and thermal cycling, effectively preventing 3/8" screw loosening in machinery, automotive assemblies, and structural frameworks. The Rockwell C38 hardness ensures the washer maintains its locking capability through repeated stress cycles without flattening or losing elasticity. The zinc plating provides essential corrosion protection in environments exposed to moisture, chemicals, or temperature variations, significantly extending the service life of critical connections. Engineered to ASME B18.21.1 specifications, this washer offers reliable performance in inch-system applications where precision fit and consistent locking action are essential for operational safety and reduced maintenance intervals.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.385" inner diameter, 0.68" outer diameter, and 0.094" thickness, engineered for optimal performance with 3/8" fasteners. Manufactured to ASME B18.21.1 standards with Rockwell C38 hardness for consistent mechanical properties. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and regulatory adherence for global industrial applications.