S-91102A039 1.153" ID x 1.847" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance - The split lock design creates constant spring tension that prevents loosening under dynamic loads and vibration
• Enhanced corrosion protection - Zinc-plated steel construction provides reliable rust resistance in demanding industrial environments
• Optimal hardness for durability - Rockwell C38 hardness rating ensures the washer maintains its locking capability through repeated use cycles
• Precise dimensional compatibility - 1.153" ID perfectly fits 1 1/8" screws while the 1.847" OD provides maximum bearing surface area
• Industry-standard compliance - Manufactured to ASME B18.21.1 specifications for guaranteed performance and interchangeability
• Environmental responsibility - RoHS 3 and REACH compliance ensures safe handling and meets global environmental regulations
• Heavy-duty thickness - 0.281" thickness delivers robust performance in high-stress applications requiring maximum locking force

Professional Applications & Engineering Value

This zinc-plated steel split lock washer addresses critical vibration-induced loosening challenges in industrial assemblies. The split lock design functions as a spring that maintains constant tension against both the bolt head and mating surface, effectively resisting rotational forces that cause fastener failure. The Rockwell C38 hardness ensures the washer doesn't deform under pressure, maintaining its locking effectiveness through thermal cycling and mechanical stress. Particularly valuable for heavy machinery, automotive assemblies, and structural applications using 1 1/8" fasteners, this washer provides reliable performance where vibration resistance is paramount. The zinc plating offers essential corrosion protection in humid or outdoor environments, extending service life while meeting strict industry standards.

Specification Summary & Compliance

This split lock washer features precise inch system dimensions with 1.153" inner diameter, 1.847" outer diameter, and 0.281" thickness, engineered for optimal performance with 1 1/8" screws. Manufactured to ASME B18.21.1 standards for dimensional accuracy and mechanical properties, ensuring reliable interchangeability and performance. The washer maintains Rockwell C38 hardness for consistent spring action and meets RoHS 3 (2015/863/EU) compliance and REACH (EC 1907/2006) regulations regarding substance restrictions, making it suitable for global industrial applications with environmental compliance requirements.