S-97775A529 0.768" ID x 1.26" OD ASME B18.21.1; MS35335-40 Mil. Spec. External-Tooth Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress environments, ensuring long-term joint integrity
• Zinc-plated steel construction provides excellent corrosion resistance for extended service life in industrial applications
• Rockwell C40 hardness rating delivers exceptional durability and maintains tooth integrity under heavy loads
• External tooth design creates maximum biting action into both bearing surfaces for reliable locking performance
• Precision dimensions (0.768" ID, 1.26" OD) ensure perfect fit for 3/4" fasteners and optimal load distribution
• Industry standard compliance with ASME B18.21.1 and MS35335-40 guarantees consistent quality and interchangeability
• Optimized thickness range (0.047-0.055") provides ideal spring tension while accommodating surface variations

Professional Applications & Engineering Value

This 3/4" external tooth lock washer delivers critical engineering solutions for vibration-prone industrial applications. The zinc-plated steel construction combats corrosion in harsh environments, while the external tooth location design provides superior biting action that resists rotational forces and maintains clamp load. Engineered to ASME B18.21.1 and MS35335-40 specifications, this heavy-duty lock washer effectively prevents bolt loosening in machinery, construction equipment, and automotive assemblies where dynamic loads and vibrations compromise joint integrity. The precise tooth geometry and Rockwell C40 hardness ensure consistent performance in demanding applications, making it an essential component for maintenance professionals and OEM manufacturers seeking reliable anti-vibration solutions.

Specification Summary & Compliance

This external tooth lock washer features precise dimensional specifications including 0.768" inner diameter, 1.26" outer diameter, and thickness ranging from 0.047" to 0.055" for optimal performance with 3/4" fasteners. Manufactured to exacting ASME B18.21.1 standards and military specification MS35335-40, the component ensures consistent quality and interchangeability. The zinc-plated steel construction provides corrosion resistance while maintaining the required Rockwell C40 hardness for durable performance. These lock washers are suitable for industrial applications requiring reliable vibration resistance and are produced in compliance with relevant industry standards for mechanical fasteners.