S-5185N137 0.894" ID x 1.459" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance - The split design creates constant spring tension that prevents fastener loosening under dynamic loads.
• Enhanced corrosion protection - Zinc-flake coating provides excellent resistance to rust and environmental degradation in industrial settings.
• Optimal hardness for durability - Rockwell C38 hardness ensures the washer maintains its locking capability through repeated use cycles.
• Precise dimensional compatibility - Specifically engineered for 7/8" screws with 0.894" ID and 1.459" OD for perfect fit and maximum contact surface.
• Reliable industrial performance - Meets ASME B18.21.1 specifications for consistent quality and predictable performance in demanding applications.
• Environmental compliance assurance - RoHS 3 and REACH compliance eliminates regulatory concerns for international industrial projects.
• Heavy-duty construction - 0.219" thickness provides substantial material strength to withstand high torque and clamping forces.

Professional Applications & Engineering Value

Engineered to solve critical vibration-induced fastener failure in industrial environments, these split lock washers deliver exceptional vibration resistance through their unique spring-action design. The zinc-flake-coated steel construction provides dual benefits: the base steel offers mechanical strength while the coating system delivers superior corrosion protection, making these standard lock washers ideal for outdoor equipment, machinery, and automotive applications where environmental exposure is a concern. With precise dimensional specifications including 0.894" ID and 1.459" OD, these inch system washers ensure perfect compatibility with 7/8" fasteners, eliminating installation issues and providing reliable vibration resistant performance in heavy machinery, construction equipment, and industrial assembly lines where constant motion and shock loads threaten fastener integrity.

Specification Summary & Compliance

This split lock washer features inch system dimensions with 0.894" internal diameter, 1.459" outer diameter, and 0.219" thickness, specifically designed for 7/8" screw applications. Manufactured to ASME B18.21.1 specifications with Rockwell C38 hardness, ensuring consistent performance and dimensional accuracy. The product maintains full compliance with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) environmental standards, making it suitable for global industrial applications with strict regulatory requirements.