S-90588A115 0.256" ID x 0.76" OD ASME B18.21.1 Internal / External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with dual internal/external teeth that bite into both mating surfaces for maximum grip and loosening prevention
• Exceptional durability provided by 410 stainless steel construction, offering excellent corrosion resistance for long service life
• Precise fit for 1/4" screws with 0.256" ID ensuring optimal performance in demanding industrial applications
• Enhanced load distribution through 0.76" OD design that minimizes surface pressure and material stress
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and performance
• Environmental responsibility through RoHS 3 and REACH compliance, ensuring safe use across regulated industries
• Reliable performance under extreme conditions with optimized thickness (0.032-0.040") maintaining consistent locking force

Professional Applications & Engineering Value

This 410 stainless steel tooth lock washer delivers critical vibration resistance in demanding industrial environments where fastener integrity is paramount. The unique internal/external tooth configuration creates a mechanical locking action that prevents rotational loosening caused by dynamic loads, thermal cycling, and constant vibration. Engineered specifically for 1/4" screw applications, these heavy-duty lock washers provide reliable fastening solutions for machinery, automotive assemblies, electrical enclosures, and structural frameworks. The 410 stainless steel material ensures corrosion resistance while maintaining the hardness needed for teeth to effectively bite into mating surfaces, making these anti-vibration washers ideal for applications where maintenance access is limited and long-term reliability is essential.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.256" inner diameter, 0.76" outer diameter, and thickness ranging from 0.032" to 0.040". Manufactured in compliance with ASME B18.21.1 standards for mechanical properties and performance requirements. The product meets RoHS 3 (2015/863/EU) compliance for hazardous substance restrictions and REACH (EC 1907/2006) compliance for chemical safety regulations, ensuring suitability for global industrial applications with stringent environmental requirements.