S-92962A115 0.385" ID x 0.55" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains constant tension under dynamic loads
• Enhanced corrosion protection with black-oxide steel finish for extended service life in harsh environments
• Precise dimensional compatibility with 0.385" ID and 0.55" OD ensuring perfect fit for 3/8" screw applications
• Exceptional mechanical strength from Rockwell C38 hardness rating for reliable performance under high stress
• Industry-standard compliance with ASME B18.21.1 specifications guaranteeing consistent quality and interchangeability
• Environmental responsibility through RoHS 3 and REACH compliance for safe industrial usage
• Optimal spring action with 0.125" thickness providing consistent locking force throughout the washer's service life

Professional Applications & Engineering Value

This black-oxide steel split lock washer delivers critical vibration resistance in demanding industrial applications where fastener loosening poses significant safety and performance risks. The split lock washer design creates continuous spring tension that compensates for thermal expansion, material settling, and dynamic loads in machinery, automotive assemblies, and heavy equipment. The black-oxide surface treatment provides essential corrosion resistance while maintaining the washer's mechanical properties, making it ideal for outdoor equipment, manufacturing environments, and transportation applications. Engineered specifically for 3/8" screw systems, this washer ensures reliable fastening in critical joints subject to constant vibration and thermal cycling, reducing maintenance frequency and preventing costly downtime in industrial operations.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications with 0.385" inner diameter, 0.55" outer diameter, and 0.125" thickness, manufactured to ASME B18.21.1 standard for consistent performance and interchangeability. The washer demonstrates Rockwell C38 hardness for optimal spring characteristics and durability. Compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations ensures environmental safety and material responsibility, meeting the latest industry standards for hazardous substance restrictions and chemical safety protocols.