S-91114A038 1.025" ID x 1.62" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through external teeth that bite into mating surfaces, preventing loosening under dynamic loads
• Enhanced corrosion protection with zinc plating that provides durable barrier against rust and environmental degradation
• Exceptional hardness and durability with Rockwell C40 rating ensuring long-term performance in demanding applications
• Precise dimensional compatibility with 1" screw sizes (1.025" ID, 1.62" OD) for perfect fit and optimal locking force
• Industry-standard compliance meeting ASME B18.21.1 specifications for reliable, predictable performance
• Environmental regulation adherence with full RoHS 3 and REACH compliance for global manufacturing acceptance
• Optimized thickness range (0.059-0.067") providing consistent compression and spring action for secure fastening

Professional Applications & Engineering Value

This zinc-plated steel external tooth lock washer delivers critical vibration resistance in demanding industrial environments where fastener integrity is paramount. The strategically positioned external teeth create multiple biting points that dig into both the fastener head and base material, effectively preventing rotational loosening caused by machinery vibration, thermal cycling, or dynamic stress. The Rockwell C40 hardness ensures the teeth maintain their bite without deformation, while the zinc plating provides essential corrosion protection in humid or chemically aggressive settings. Ideal for heavy machinery, automotive assemblies, electrical enclosures, and structural frameworks, this 1" lock washer solves the persistent challenge of maintaining joint integrity in high-vibration applications, reducing maintenance frequency and preventing catastrophic fastener failure.

Specification Summary & Compliance

This external tooth lock washer features precise inch system dimensions with 1.025" internal diameter and 1.62" external diameter, specifically engineered for 1" screw applications. Manufactured to ASME B18.21.1 standards, it ensures consistent performance and interchangeability. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting the latest environmental and safety requirements for industrial components. The thickness range of 0.059-0.067" provides controlled compression for optimal locking force in various assembly conditions.