S-90127A009 0.161" ID x 0.402" OD Heavy-Vibration-Resistant Spring Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications, ensuring long-term assembly integrity
• Hardened steel construction with Rockwell C40 hardness delivers exceptional durability and spring tension retention under repeated loading cycles
• Precision top serration design provides maximum bite and anti-rotation performance on mating surfaces
• Optimized 0.161" ID and 0.402" OD dimensions ensure perfect fit and consistent performance with No. 8 screw sizes
• Full compliance with RoHS 3 and REACH regulations guarantees environmental safety and global market acceptability
• Controlled thickness range (0.036-0.042") maintains reliable spring deflection characteristics and consistent clamping force
• Inch system compatibility simplifies integration with North American machinery and equipment standards

Professional Applications & Engineering Value

This spring lock washer delivers critical vibration resistance in demanding mechanical systems where dynamic loads and operational stresses threaten fastener integrity. The hardened steel composition, heat-treated to Rockwell C40 hardness, maintains consistent spring force and prevents permanent set deformation under cyclic loading. The strategically positioned top serration creates superior surface bite, effectively resisting rotational loosening in automotive assemblies, industrial machinery, and electrical enclosures. Engineered with precision 0.161" ID for perfect No. 8 screw compatibility, this washer solves common maintenance issues in vibration-prone environments, reducing downtime and replacement costs while meeting stringent RoHS 3 and REACH compliance requirements for global supply chains.

Specification Summary & Compliance

This spring lock washer features inch system dimensions with 0.161" internal diameter, 0.402" outer diameter, and controlled thickness between 0.036-0.042" for precise fitment. Manufactured from hardened steel with Rockwell C40 hardness specification, it delivers consistent spring performance and meets industrial locking requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental safety and unrestricted international distribution for industrial fastener applications.