S-95584A311 0.086" ID x 0.189" 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 provided by 18-8 stainless steel construction for long-term reliability in harsh environments
• Precise dimensional fit with 0.086" ID specifically engineered for No. 2 screws to ensure proper installation and performance
• Enhanced durability with Rockwell B88 hardness that maintains tooth integrity and locking force through repeated cycles
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and interchangeability
• Environmental responsibility with RoHS 3 and REACH compliance for safe use in regulated industrial applications
• Optimal load distribution through 0.189" OD design that spreads clamping force while minimizing surface damage

Professional Applications & Engineering Value

These external tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications where mechanical vibrations and thermal cycling threaten joint integrity. The 18-8 stainless steel construction provides exceptional corrosion resistance, making them ideal for chemical processing, marine environments, and food processing equipment where moisture and corrosive agents are present. The precisely positioned external teeth create multiple biting points that dig into both the fastener head and mounting surface, creating a mechanical lock that maintains clamping force where standard flat washers fail. This tooth lock washer design is particularly valuable in No. 2 screw applications within electronics enclosures, control panels, and precision instruments where space constraints demand reliable small-diameter fastening solutions that won't compromise on performance or longevity.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.086" internal diameter, 0.189" outer diameter, and thickness ranging from 0.010" to 0.013" for consistent performance. Manufactured to ASME B18.21.1 standards, these washers ensure proper tooth geometry and material properties for reliable locking action. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, confirming adherence to the latest environmental and safety standards for industrial components. The Rockwell B88 hardness provides optimal balance between deformation resistance and tooth flexibility, while the inch system measurements guarantee compatibility with standard No. 2 screw applications across various industries.