S-91475A293 0.377" ID x 0.68" OD ASME B18.21.1; MS35338-46 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 zinc yellow-chromate plating that provides excellent resistance to industrial environments and extends service life
• Optimal hardness performance with Rockwell C38 rating ensuring consistent spring action and reliable locking force without deformation
• Precise dimensional compatibility with 0.377" ID specifically engineered for secure fitment on 3/8" screws in inch system applications
• Robust construction using steel material that withstands high-stress conditions while maintaining structural integrity
• Industry-standard compliance meeting ASME B18.21.1 and MS35338-46 specifications for quality assurance and interchangeability
• Versatile industrial application with 0.68" OD and 0.094" thickness providing optimal bearing surface for various assembly requirements

Professional Applications & Engineering Value

This split lock washer delivers critical vibration-resistant performance in demanding industrial environments where fastener security is paramount. Engineered from zinc yellow-chromate plated steel, it effectively combats corrosion in harsh conditions while the Rockwell C38 hardness ensures consistent spring tension that prevents back-off in high-vibration applications. The precise 0.377" internal diameter provides exact fitment for 3/8" screws, eliminating play and maintaining clamping force in machinery, equipment assemblies, and structural frameworks. The split lock design creates continuous upward force against the fastener head or nut, solving common loosening problems in automotive, manufacturing, and heavy equipment applications where thermal cycling and dynamic loads compromise joint integrity.

Specification Summary & Compliance

This split lock washer features precise dimensional specifications including 0.377" ID, 0.68" OD, and 0.094" thickness, manufactured to exacting tolerances for reliable performance. The product fully complies with ASME B18.21.1 standards for split lock washers and military specification MS35338-46, ensuring consistent quality, dimensional accuracy, and mechanical properties. Manufactured from high-quality steel with zinc yellow-chromate plating for corrosion resistance, this washer meets industry requirements for heavy-duty industrial applications and maintains compliance with relevant material and performance specifications.