S-95584A512 0.513" ID x 0.9" OD ASME B18.21.1 External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with external teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Excellent corrosion resistance from 18-8 stainless steel construction for long service life in harsh environments
• Precise dimensional compatibility with 0.513" ID specifically engineered for 1/2" screw applications
• Optimized load distribution through 0.9" outer diameter providing enhanced surface contact area
• Reliable performance standardization through compliance with ASME B18.21.1 manufacturing specifications
• Environmental regulatory compliance meeting both RoHS 3 and REACH requirements for safe industrial use
• Consistent thickness control between 0.037-0.045" ensuring uniform clamping force in assembly applications

Professional Applications & Engineering Value

This external tooth lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener security is paramount. The 18-8 stainless steel construction provides exceptional corrosion resistance in challenging environments including marine, chemical processing, and outdoor equipment. The strategically positioned external teeth create positive locking action by embedding into both the fastener head and base material, effectively preventing rotational loosening caused by vibration, thermal cycling, or dynamic loading. Engineered specifically for 1/2" screw applications, this component is essential for machinery assembly, heavy equipment manufacturing, automotive systems, and structural frameworks where reliable fastener retention directly impacts operational safety and maintenance intervals. The combination of material durability and mechanical locking action makes this washer an optimal solution for applications requiring long-term vibration resistance without compromising corrosion performance.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards ensuring dimensional precision and mechanical performance consistency. The washer features external tooth configuration with 0.513" inner diameter, 0.9" outer diameter, and thickness ranging 0.037-0.045" for reliable fit with 1/2" fasteners. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations guarantees environmental safety and regulatory acceptance for industrial applications across global markets.