S-93501A030 0.331" ID x 0.512" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with dual serrations on both top and bottom surfaces for enhanced locking power in high-stress applications
• Dual-system compatibility for both 5/16" and M8 screw sizes, offering flexibility in inch and metric assembly environments
• Exceptional durability thanks to Rockwell C40 hardness steel construction that resists deformation under heavy loads
• Reliable performance in demanding industrial settings with precise dimensions (0.331" ID x 0.512" OD) ensuring proper fit and function
• Environmental compliance with RoHS 3 and REACH standards, making it suitable for regulated industries and global supply chains
• Optimized spring action from the 0.055" overall height design that maintains consistent tension and prevents loosening
• Versatile application across mechanical fastening systems where vibration-induced failure is a concern

Professional Applications & Engineering Value

This steel spring lock washer addresses critical vibration-related failures in industrial equipment and machinery. The dual serration pattern on both top and bottom surfaces creates multiple biting edges that significantly increase friction resistance, preventing screw back-out in high-vibration environments like automotive assemblies, heavy machinery, and power transmission systems. Manufactured from hardened steel with Rockwell C40 rating, it maintains its spring tension and locking capability even under extreme cyclic loading. The inch and metric compatibility (5/16" and M8) makes it ideal for global manufacturing operations and equipment servicing. With precise dimensional control (0.331" ID x 0.512" OD), engineers can rely on consistent performance in industrial washers applications where safety and reliability are paramount.

Specification Summary & Compliance

This spring lock washer features precise dimensions of 0.331" internal diameter and 0.512" outer diameter with 0.031" thickness and 0.055" overall height. Designed for 5/16" and M8 screw sizes, it meets industry standards for mechanical fasteners. The component demonstrates Rockwell C40 hardness for consistent performance and is manufactured in compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for various industrial applications without hazardous substance restrictions.