S-98449A520 0.141" ID x 0.295" OD ASME B18.21.1 Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal teeth that bite into mating surfaces to prevent loosening under dynamic loads
• Exceptional corrosion resistance from 400 Series Stainless Steel construction for long-term reliability in harsh environments
• Optimized mechanical performance with Rockwell C34 hardness providing durable teeth that maintain locking force
• Precision dimensional compatibility with 0.141" ID specifically engineered for No. 6 screw applications
• Industry-standard compliance meeting ASME B18.21.1 specifications for consistent quality and performance
• Environmental regulation adherence with RoHS 3 and REACH compliance for global manufacturing applications
• Reliable internal tooth design that concentrates locking force while minimizing surface marring

Professional Applications & Engineering Value

These internal tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications. The 400 Series Stainless Steel construction provides excellent corrosion resistance while maintaining the mechanical properties needed for high-stress environments. The internal tooth location design ensures maximum biting action into both the fastener and workpiece, creating a secure locking mechanism that prevents rotational loosening in machinery, automotive assemblies, and electrical enclosures. Engineered to ASME B18.21.1 standards, these washers offer predictable performance in applications where vibration-induced failure is a concern, making them ideal for maintenance, repair, and OEM operations requiring reliable No. 6 screw fastening solutions.

Specification Summary & Compliance

This internal tooth lock washer features precise dimensional specifications including 0.141" ID, 0.295" OD, and thickness ranging 0.016-0.022". Manufactured to ASME B18.21.1 standards for tooth lock washers, it ensures consistent performance and interchangeability. The washer demonstrates full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, making it suitable for global supply chain requirements. The inch system measurements provide compatibility with standard imperial fastener systems, while the Rockwell C34 hardness specification guarantees optimal tooth durability and locking performance.