S-96551A380 0.195" ID x 0.381" OD ASME B18.21.1; MS35333-107; NASM35333 Mil. Spec. 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
• Excellent corrosion resistance due to premium bronze construction, ideal for harsh industrial environments
• Optimized for No. 10 screws with precise 0.195" ID for perfect fit and maximum holding power
• Enhanced durability from Rockwell B90 hardness, maintaining tooth integrity through repeated installations
• Reliable compliance with multiple military and industrial standards including ASME B18.21.1 and MS35333-107
• Consistent performance through controlled 0.020-0.025" thickness ensuring uniform pressure distribution
• Secure internal tooth design that provides concentrated locking force while protecting visible surfaces

Professional Applications & Engineering Value

These bronze tooth lock washers deliver critical vibration-resistant fastening solutions for demanding industrial applications where reliability is paramount. The internal tooth configuration creates multiple biting points that dig into both the fastener and workpiece, effectively resisting rotational forces in high-vibration environments like motors, pumps, and heavy machinery. The bronze material offers natural corrosion resistance while maintaining the necessary hardness (Rockwell B90) to prevent deformation under load. Engineered specifically for No. 10 screw sizes with precise 0.195" ID and 0.381" OD dimensions, these washers provide secure locking in aerospace, military, and precision mechanical assemblies where compliance with ASME B18.21.1 and military specifications is required for quality assurance.

Specification Summary & Compliance

This bronze tooth lock washer features inch system dimensions with 0.195" internal diameter, 0.381" outer diameter, and controlled thickness between 0.020-0.025". The internal tooth design conforms to ASME B18.21.1 standards for tooth lock washers, along with military specifications MS35333-107 and NASM35333. Manufactured from bronze with Rockwell B90 hardness, these washers maintain dimensional accuracy and mechanical properties required for critical fastening applications, ensuring reliable performance in compliance with industry and military standards.