S-93501A036 0.787" ID x 1.181" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through dual top and bottom serrations that bite into mating surfaces, preventing loosening under dynamic loads
• Extended service life with hardened steel construction and Rockwell C40 hardness that maintains locking performance in demanding environments
• Universal compatibility with both inch (3/4") and metric (M19) screw systems, eliminating the need for multiple washer types
• Reliable electrical grounding achieved through serrated teeth cutting through surface oxides and coatings
• Optimized load distribution with precise 0.787" ID and 1.181" OD dimensions that ensure proper fit and pressure distribution
• Environmental compliance assurance meeting RoHS 3 and REACH standards for use in regulated industries and global markets
• Consistent performance maintained through controlled 0.059" thickness and 0.098" overall height for predictable spring action

Professional Applications & Engineering Value

This spring lock washer delivers critical vibration-resistant fastening for industrial machinery, automotive assemblies, and heavy equipment where constant motion threatens joint integrity. The hardened steel construction with Rockwell C40 hardness ensures the dual serrated surfaces maintain their biting capability through repeated thermal cycles and mechanical stress. Engineers specify these washers for applications requiring reliable electrical bonding or where conventional flat washers fail under vibration. The top and bottom serration design provides immediate resistance to rotational loosening while the spring action maintains constant preload, making these washers ideal for 3/4" and M19 screw applications in construction equipment, agricultural machinery, and industrial motor mounts where safety-critical connections cannot compromise.

Specification Summary & Compliance

Manufactured to precise dimensional standards with 0.787" internal diameter, 1.181" outer diameter, 0.059" thickness, and 0.098" overall height. Compatible with both 3/4" inch and M19 metric screw systems. The hardened steel material achieves Rockwell C40 hardness for consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, ensuring suitability for global industrial applications and restricted substance management.