S-90895A111 0.457" ID x 0.626" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance with dual-sided serrations on both top and bottom surfaces for maximum locking force and slip prevention
• Exceptional corrosion resistance thanks to 18-8 stainless steel construction, ideal for harsh industrial environments
• Enhanced durability and load distribution with Rockwell C38 hardness maintaining performance under repeated stress
• Dual-standard compatibility designed for both 7/16" inch and M11 metric screw sizes, reducing inventory complexity
• Precision dimensional control with 0.457" ID and 0.626" OD ensuring consistent fit and reliable fastening performance
• Compliance assurance meeting RoHS 3 and REACH environmental standards for global industrial applications
• Optimized spring height at 0.063" providing effective tension and compensation for joint relaxation

Professional Applications & Engineering Value

This spring lock washer delivers critical vibration-resistant performance for demanding industrial applications where fastener loosening can cause equipment failure. The 18-8 stainless steel construction provides excellent corrosion resistance in chemical processing, marine, and outdoor environments. The unique top and bottom serration design creates multiple biting edges that dig into both the fastener and mating surface, effectively preventing rotational slip under dynamic loads. With dual compatibility for both 7/16" and M11 screw sizes, this washer simplifies procurement for facilities operating with mixed measurement systems. The Rockwell C38 hardness ensures the serrations maintain their grip without deforming, making it ideal for heavy machinery, automotive assemblies, and structural applications where reliability is paramount.

Specification Summary & Compliance

This spring lock washer features precise dimensions with 0.457" inner diameter, 0.626" outer diameter, 0.039" thickness, and 0.063" overall height. Manufactured from 18-8 stainless steel with Rockwell C38 hardness for consistent performance. Designed for use with 7/16" and M11 screw sizes with dual-sided serrations for enhanced locking capability. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance for industrial fastener applications.