S-5185N134 0.574" ID x 0.965" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance thanks to the split design that maintains constant spring tension under dynamic loads
• Exceptional corrosion protection provided by zinc-flake coating, extending service life in demanding environments
• Reliable hardness performance with Rockwell C38 rating ensuring consistent spring action and load distribution
• Precision dimensional fit with 0.574" ID specifically engineered for 9/16" screw applications
• Industry-standard compliance meeting ASME B18.21.1 specifications for guaranteed quality and interchangeability
• Environmental regulation adherence with RoHS 3 and REACH compliance for global manufacturing applications
• Heavy-duty construction featuring 0.141" thickness and 0.965" OD for maximum bearing surface and locking force

Professional Applications & Engineering Value

This zinc-flake-coated steel split lock washer delivers critical vibration resistance in high-stress industrial applications where fastener loosening can compromise safety and performance. The standard split lock washer design creates continuous spring tension that counters rotational forces and thermal cycling effects, making it ideal for machinery, automotive assemblies, and heavy equipment requiring 9/16" screw fastening solutions. The corrosion-resistant zinc-flake coating provides superior protection against environmental degradation, while the Rockwell C38 hardness ensures the washer maintains its spring properties through repeated loading cycles. Engineered to ASME B18.21.1 standards, this washer offers reliable performance in applications ranging from construction equipment to manufacturing machinery where vibration-induced failure is a constant concern.

Specification Summary & Compliance

This heavy-duty split lock washer features precise dimensional specifications including 0.574" inner diameter, 0.965" outer diameter, and 0.141" thickness, manufactured to ASME B18.21.1 standards for consistent quality and performance. The washer demonstrates full compliance with RoHS 3 (2015/863/EU) regulations and REACH (EC 1907/2006) requirements, including the latest SVHC updates as of January 17, 2023. The zinc-flake-coated steel construction with Rockwell C38 hardness ensures dimensional stability and reliable locking performance across industrial applications requiring inch-system fasteners.