S-91475A331 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 due to the split lock design that maintains constant spring tension under dynamic loads
• Enhanced corrosion protection with zinc yellow-chromate plating that withstands harsh industrial environments
• Reliable hardness performance with Rockwell C38 rating ensuring consistent springback and long service life
• Precision dimensional fit with 0.564" ID and 0.965" OD engineered for perfect compatibility with 9/16" fasteners
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-49 specifications for quality assurance
• Optimized thickness design at 0.141" providing ideal balance between spring action and space constraints
• Heavy-duty construction from plated steel offering excellent strength-to-weight ratio for demanding applications

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance in industrial machinery, automotive assemblies, and heavy equipment where constant dynamic loads threaten fastener integrity. The zinc yellow-chromate plated steel construction provides dual protection against both corrosion and wear, while the Rockwell C38 hardness ensures the washer maintains its spring tension through repeated compression cycles. Engineered to ASME B18.21.1 standards with precise 0.564" ID dimensions, this washer creates a reliable locking mechanism for 9/16" screws in high-vibration environments where traditional fasteners might loosen over time. The split design allows for easy installation while providing continuous radial pressure that compensates for thermal expansion and material relaxation in mechanical systems.

Specification Summary & Compliance

This standard split lock washer features inch measurement system compatibility with internal diameter of 0.564", outer diameter of 0.965", and thickness of 0.141". Manufactured from zinc yellow-chromate plated steel with Rockwell C38 hardness, the product strictly complies with ASME B18.21.1 dimensional and performance standards as well as MS35338-49 military specifications. The washer is designed for use with 9/16" screw sizes and meets industry-standard tolerance requirements for reliable performance in critical assembly applications.