S-93281A103 0.34" ID x 0.53" OD Extreme-Vibration-Resistant Wedge Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening in high-stress applications, ensuring long-term joint integrity.
• Dual-sided serrations (top and bottom) bite into both the fastener and surface for maximum holding power and anti-rotational security.
• High Rockwell C46 hardness provides exceptional durability and resistance to deformation under load.
• Zinc-flake coating offers excellent corrosion resistance, extending service life in harsh industrial environments.
• Versatile inch (5/16") and metric (M8) screw compatibility simplifies inventory and supports global equipment standards.
• Precise dimensional control (0.34" ID, 0.53" OD, 0.080-0.090" thickness) ensures consistent performance and easy installation.
• Robust spring lock design maintains constant tension, compensating for material relaxation and thermal cycling.

Professional Applications & Engineering Value

This zinc-flake-coated spring lock washer is engineered to solve critical loosening issues in dynamic and high-vibration environments. Its dual serration technology on both top and bottom surfaces creates a mechanical lock that resists rotational forces, making it ideal for heavy machinery, automotive assemblies, and structural frameworks. The high Rockwell C46 hardness ensures the washer maintains its spring tension and serration bite even under extreme cyclic loads, preventing joint failure. The zinc-flake coating provides a robust barrier against corrosion, which is essential for outdoor or chemically exposed applications. Compatible with both 5/16" and M8 screw sizes, it offers flexibility for multi-standard engineering projects, reducing the need for multiple part numbers and streamlining procurement.

Specification Summary & Compliance

This washer meets standard dimensional tolerances for spring lock washers with an ID of 0.34", OD of 0.53", and thickness between 0.080-0.090". It is designed for use with 5/16" and M8 screws, adhering to common industrial thread standards. The zinc-flake coating process complies with environmental regulations such as RoHS and REACH, ensuring no hazardous substances are used. Manufactured to consistent quality controls, it supports reliability in applications requiring vibration resistance and anti-loosening performance.