S-91108A111 0.53" ID x 0.867" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through internal tooth design that bites into mating surfaces, preventing fastener loosening in high-stress applications
• Exceptional corrosion resistance with 316 stainless steel construction, ideal for harsh environments including marine and chemical processing
• Precise dimensional compatibility with 0.53" inner diameter specifically engineered for 1/2" fasteners
• Reliable performance standards meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Enhanced environmental compliance with RoHS 3 and REACH regulations for global industrial applications
• Optimized load distribution through 0.867" outer diameter design that spreads pressure evenly across surfaces
• Durable construction with consistent 0.037-0.045" thickness ensuring long-term reliability in demanding conditions

Professional Applications & Engineering Value

These 316 stainless steel tooth lock washers deliver critical vibration resistance in industrial applications where fastener security is paramount. The internal tooth configuration provides superior locking action by embedding into both the fastener and mounting surface, creating a mechanical bond that withstands intense vibration and dynamic loads. Engineered to ASME B18.21.1 standards, these washers ensure precise dimensional control for reliable performance in heavy machinery, marine equipment, chemical processing systems, and offshore installations. The 316 stainless steel material offers exceptional resistance to chloride corrosion, making these internal tooth washers ideal for applications exposed to saltwater, chemicals, and extreme environmental conditions where maintenance access is limited and reliability is non-negotiable.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.53" inner diameter for 1/2" fasteners, 0.867" outer diameter, and thickness ranging 0.037-0.045". Manufactured to ASME B18.21.1 standards for dimensional accuracy and performance reliability. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring safe use across global industrial markets. The internal tooth location provides consistent locking performance while the inch measurement system ensures compatibility with standard industrial equipment and specifications.