S-91102A745 0.227" ID x 0.377" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress industrial environments
• Zinc-plated steel construction provides excellent corrosion protection for extended service life
• Rockwell C38 hardness rating ensures exceptional durability and spring tension retention
• Precision 0.227" ID design guarantees perfect fit for No. 12 screws without slippage
• ASME B18.21.1 compliance delivers reliable performance meeting industry standards
• Environmental compliance with RoHS 3 and REACH regulations for sustainable operations
• 0.377" OD with 0.056" thickness provides optimal bearing surface and locking force distribution

Professional Applications & Engineering Value

This split lock washer delivers critical engineering value by solving vibration-induced fastener failure in demanding applications. The zinc-plated steel construction combines corrosion resistance with mechanical strength, while the standard split design creates continuous spring action that maintains clamping force under dynamic loads. Engineered specifically for No. 12 screw size applications, this washer prevents rotational loosening in machinery, automotive assemblies, and industrial equipment where thermal cycling and operational vibrations compromise joint integrity. The Rockwell C38 hardness ensures the split lock washer maintains its spring characteristics through repeated compression cycles, providing reliable vibration-resistant performance that reduces maintenance frequency and prevents costly downtime in manufacturing and mechanical systems.

Specification Summary & Compliance

This heavy-duty split lock washer features precise dimensional specifications with 0.227" internal diameter, 0.377" outer diameter, and 0.056" thickness, engineered for optimal performance with No. 12 screw size fasteners. Manufactured to ASME B18.21.1 standards for dimensional accuracy and mechanical properties, the washer maintains Rockwell C38 hardness for consistent spring performance. The product is fully compliant with RoHS 3 (2015/863/EU) restrictions on hazardous substances and meets REACH (EC 1907/2006) requirements for chemical safety, ensuring environmental responsibility in industrial applications.