S-90895A009 0.169" ID x 0.276" OD Heavy-Vibration-Resistant Spring Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance ensures long-term joint integrity in high-stress applications
• Dual-sided serration design (top and bottom) provides maximum grip on both mating surfaces
• 18-8 stainless steel construction offers excellent corrosion resistance and durability
• Rockwell C38 hardness rating maintains spring tension under repeated loading cycles
• Dual measurement compatibility fits both No. 8 (inch) and M4 (metric) screw sizes
• Environmental compliance meets RoHS 3 and REACH standards for global industrial use
• Precision dimensions (0.169" ID, 0.276" OD) ensure consistent performance and easy installation

Professional Applications & Engineering Value

This spring lock washer addresses critical vibration-induced loosening in industrial assemblies through its unique dual serration design. The top and bottom serrations create positive locking action on both contact surfaces, preventing rotational slip in machinery, automotive, and electrical enclosures. Manufactured from 18-8 stainless steel, it withstands corrosive environments while maintaining Rockwell C38 hardness for reliable spring force retention. The washer's compatibility with both No. 8 (inch) and M4 (metric) fastening systems makes it ideal for equipment with mixed standardization, reducing inventory complexity for maintenance operations.

Specification Summary & Compliance

Precision-engineered with 0.169" inner diameter and 0.276" outer diameter dimensions. Manufactured to industry standards for spring lock washers with controlled hardness (Rockwell C38) ensuring consistent performance. Fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, meeting current substance restriction requirements for industrial components.