S-96551A130 0.384" ID x 0.692" OD ASME B18.21.1; MS35333-76; NASM35333 Mil. Spec. Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance with internal tooth design that bites into mating surfaces to prevent loosening under dynamic loads
• Exceptional durability provided by 410 Stainless Steel construction with Rockwell C40-50 hardness for long service life
• Precise dimensional fit with 0.384" ID and 0.692" OD engineered for perfect compatibility with 3/8" fasteners
• Industry-standard compliance meeting ASME B18.21.1, NASM35333, and MS35333-76 specifications for reliable performance
• Environmental regulation compliance with RoHS 3 and REACH compliance for global industrial applications
• Optimized thickness range (0.032-0.040") ensures proper compression and locking action in various assembly scenarios
• Corrosion-resistant properties of 410 stainless steel maintain integrity in demanding industrial environments

Professional Applications & Engineering Value

This 3/8" tooth lock washer delivers critical vibration resistance in high-stress industrial applications where fastener security is paramount. The internal tooth design provides superior locking action by biting into both the fastener head and bearing surface, creating a mechanical interference that prevents rotational loosening. Manufactured from 410 stainless steel, these washers offer excellent corrosion resistance while maintaining the necessary hardness (Rockwell C40-50) to withstand repeated loading cycles. The precision-engineered dimensions ensure consistent performance in machinery, automotive assemblies, and heavy equipment where vibration-resistant washers are essential for maintaining joint integrity and preventing catastrophic failures in critical connections.

Specification Summary & Compliance

This tooth lock washer features precise dimensional specifications including 0.384" ID, 0.692" OD, and thickness range of 0.032-0.040" designed for 3/8" fasteners. The component meets rigorous industry standards including ASME B18.21.1, NASM35333, and MS35333-76 for dimensional accuracy and performance requirements. Material certification confirms Rockwell C40-50 hardness for optimal spring properties and wear resistance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental responsibility and global market acceptance for industrial applications.