S-91475A553 0.564" ID x 0.965" OD ASME B18.21.1; MS35338-49 Mil. Spec. Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance through the split lock design that maintains constant tension and prevents fastener loosening under dynamic loads
• Enhanced corrosion protection with cadmium-plated steel construction, extending service life in demanding industrial environments
• Optimized locking force with precise 0.564" internal diameter ensuring perfect fit and maximum holding power for 9/16" screws
• Exceptional durability backed by Rockwell C38 hardness rating, providing reliable performance under high-stress applications
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-49 specifications for guaranteed quality and interchangeability
• Robust dimensional stability with 0.965" OD and 0.141" thickness maintaining consistent performance across thermal cycles and load variations
• Universal compatibility with inch-system fasteners, making them ideal for maintenance, repair, and OEM applications

Professional Applications & Engineering Value

This cadmium-plated steel split lock washer delivers critical engineering solutions for industrial applications where vibration-induced fastener failure is a major concern. The standard split lock washer design creates continuous spring tension that compensates for thermal expansion, material relaxation, and dynamic loading - effectively preventing costly downtime from loose connections. Engineered specifically for 9/16" screws with precise 0.564" ID, these industrial lock washers provide reliable performance in heavy machinery, automotive assemblies, construction equipment, and manufacturing systems. The cadmium plating offers superior corrosion resistance compared to standard steel finishes, while the Rockwell C38 hardness ensures the washer maintains its locking properties through repeated installation cycles and extreme operating conditions.

Specification Summary & Compliance

This split lock washer features precise inch-dimension specifications including 0.564" internal diameter, 0.965" outer diameter, and 0.141" thickness. Manufactured to exacting ASME B18.21.1 standards and military specification MS35338-49, ensuring dimensional accuracy and performance reliability. The cadmium-plated steel construction meets industry requirements for corrosion protection and electrical conductivity. Hardness is certified at Rockwell C38 for consistent mechanical properties. These washers are designed specifically for use with 9/16" screws and comply with relevant industrial standards for quality assurance and material traceability.