S-5185N126 1.789" ID x 2.679" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance prevents fastener loosening in high-stress applications, ensuring long-term joint integrity
• Black-oxide steel construction provides excellent corrosion resistance and durability in demanding industrial environments
• Rockwell C38 hardness rating maintains structural integrity under heavy loads and repeated stress cycles
• Precision-engineered dimensions (1.789" ID, 2.679" OD, 0.389" thickness) ensure perfect fit for 1 3/4" screw applications
• ASME B18.21.1 compliance guarantees consistent quality and performance meeting industry standards
• Split lock design creates continuous spring tension that compensates for thermal expansion and material relaxation
• Environmental compliance with RoHS 3 and REACH regulations ensures safe use across global industrial markets

Professional Applications & Engineering Value

This Black-Oxide Steel split lock washer delivers exceptional engineering value in applications where vibration-induced loosening compromises safety and performance. The split lock washer design generates constant spring force that maintains bolt tension despite thermal cycling, material creep, and mechanical vibrations common in heavy machinery, construction equipment, and transportation systems. The black-oxide surface treatment provides superior corrosion protection in harsh environments while maintaining dimensional stability. With Rockwell C38 hardness, this washer withstands extreme pressure without deformation, making it ideal for critical fastening applications in industrial manufacturing, infrastructure projects, and mechanical assemblies where reliability cannot be compromised.

Specification Summary & Compliance

Manufactured to ASME B18.21.1 standards with precise dimensional tolerances for consistent performance. Features 1.789" inner diameter, 2.679" outer diameter, and 0.389" thickness specifically engineered for 1 3/4" screw applications. The standard split lock washer type ensures proper spring action and locking performance. Full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental regulations, meeting the latest substance restriction requirements for industrial components.