S-91475A552 0.502" ID x 0.869" OD ASME B18.21.1; MS35338-48 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance ensures fasteners remain securely locked even under continuous mechanical stress and motion
• Cadmium-plated steel construction provides excellent corrosion resistance for extended service life in harsh industrial environments
• Rockwell C38 hardness rating delivers exceptional durability and maintains spring tension through repeated loading cycles
• Precision 0.502" inner diameter guarantees perfect fit and optimal locking performance for 1/2" screw applications
• Standard split lock design offers reliable, time-tested performance with easy installation and removal
• ASME B18.21.1 and MS35338-48 compliance ensures consistent quality and interoperability with other standardized components
• 0.125" thickness and 0.869" outer diameter provides optimal bearing surface while maintaining compact dimensions

Professional Applications & Engineering Value

This cadmium-plated steel split lock washer delivers critical vibration resistance in demanding mechanical assemblies where loosening under dynamic loads poses significant safety and performance risks. The Rockwell C38 hardness ensures the washer maintains its spring force through thermal cycling and repeated stress applications, preventing fastener back-off in heavy machinery, automotive systems, and industrial equipment. The cadmium plating provides essential corrosion protection for outdoor applications or environments with moisture exposure, while the precise 0.502" inner diameter ensures perfect compatibility with 1/2" fasteners. Engineered to ASME B18.21.1 standards, this washer offers reliable performance in critical joints where vibration-induced failure is not an option.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.502" inner diameter, 0.869" outer diameter, and 0.125" thickness, engineered for optimal performance with 1/2" screws. Manufactured to exacting ASME B18.21.1 and MS35338-48 specifications, ensuring dimensional accuracy and mechanical properties meet industry standards. The cadmium-plated steel construction provides corrosion resistance while maintaining the required Rockwell C38 hardness for consistent spring performance. Complies with relevant industry standards for mechanical fasteners in inch measurement systems.