S-96551A210 0.141" ID x 0.295" OD ASME B18.21.1; MS35333-37; NASM35333 Mil. Spec. Internal-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments
• Cadmium-plated steel construction provides excellent corrosion protection for extended service life
• Rockwell C40-50 hardness rating ensures exceptional durability and wear resistance
• Internal tooth design delivers maximum gripping force and secure locking action
• Precision dimensions (0.141" ID, 0.295" OD) guarantee perfect fit for No. 6 screw applications
• Multi-standard compliance meets rigorous ASME, MS, and NASM specifications for quality assurance
• Optimized thickness range (0.017-0.021") provides consistent performance across various assembly requirements

Professional Applications & Engineering Value

This internal tooth lock washer delivers critical anti-loosening performance in demanding industrial applications where vibration and dynamic loads threaten fastener integrity. The cadmium-plated steel construction combines corrosion resistance with the mechanical strength needed for harsh operating environments. Engineered with precision inch dimensions specifically for No. 6 screw sizes, this washer solves common assembly challenges in machinery, automotive, and aerospace applications where reliable vibration resistance is non-negotiable. The internal tooth configuration bites into both the bearing surface and fastener head, creating a positive locking action that maintains clamp load under extreme conditions, preventing costly downtime and maintenance issues.

Specification Summary & Compliance

This precision tooth lock washer features exact dimensional tolerances with 0.141" internal diameter and 0.295" outer diameter, manufactured to meet ASME B18.21.1 standards along with MS35333-37 and NASM35333 specifications. The component demonstrates full compliance with industry-standard manufacturing protocols and material requirements, ensuring consistent performance and reliability across all applications. The cadmium plating provides both corrosion protection and enhanced surface properties while maintaining the specified Rockwell C40-50 hardness for optimal mechanical performance.