S-92962A118 0.641" ID x 0.917" OD ASME B18.21.1 Split Lock Washers for Socket Head Screws

Key Features & Benefits at a Glance

• Superior vibration resistance prevents loosening under dynamic loads, ensuring long-term joint integrity
• Black-oxide steel construction provides excellent corrosion resistance for extended service life in harsh environments
• Rockwell C38 hardness rating delivers exceptional durability and maintains locking force under high stress
• Precision 0.641" ID and 0.917" OD dimensions ensure perfect fit with 5/8" fasteners and consistent performance
• ASME B18.21.1 compliance guarantees standardized quality and interchangeability across industrial applications
• RoHS 3 and REACH compliance meets international environmental regulations for global supply chain compatibility
• 0.203" thickness provides optimal spring tension while maintaining space efficiency in assembly designs

Professional Applications & Engineering Value

This split lock washer addresses critical vibration-induced loosening challenges in heavy machinery, automotive assemblies, and structural frameworks. The black-oxide steel material combined with Rockwell C38 hardness creates a robust locking solution that maintains tension under extreme operational stresses. The split design generates continuous spring force against both bearing surface and fastener, effectively resisting rotational movement in industrial applications where constant vibration would compromise standard fasteners. Engineered to ASME B18.21.1 standards, this washer delivers predictable performance in critical joints, from manufacturing equipment to transportation systems, where failure prevention is paramount. The corrosion-resistant black-oxide finish further enhances reliability in environments exposed to moisture and chemicals.

Specification Summary & Compliance

This standard split lock washer features precise inch-system dimensions: 0.641" ID, 0.917" OD, and 0.203" thickness, engineered for 5/8" screw applications. Manufactured to ASME B18.21.1 specifications for dimensional accuracy and performance requirements. The product is fully compliant with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring environmental responsibility and global market acceptance. The Rockwell C38 hardness rating confirms consistent material properties and reliable locking performance across production batches.