S-5185N132 0.45" ID x 0.776" OD ASME B18.21.1 Split Lock Washers

Key Features & Benefits at a Glance

• Superior vibration resistance maintains secure fastening in high-stress applications, preventing loosening under dynamic loads
• Zinc-flake-coated steel construction provides excellent corrosion protection for extended service life in harsh industrial environments
• Rockwell C38 hardness rating ensures consistent spring tension and reliable locking performance throughout the washer's lifespan
• ASME B18.21.1 standard compliance guarantees dimensional accuracy and interchangeability with other standard components
• Precise 0.45" inner diameter ensures perfect fit for 7/16" screws, eliminating installation issues and reducing assembly time
• RoHS 3 and REACH compliance meets strict environmental regulations while maintaining industrial-grade durability
• Standard split lock design offers cost-effective vibration protection without requiring special tools or complex installation procedures

Professional Applications & Engineering Value

These split lock washers deliver exceptional engineering value in applications where vibration-induced loosening poses significant operational risks. The zinc-flake-coated steel material provides superior corrosion resistance compared to standard plating methods, making these washers ideal for outdoor equipment, automotive assemblies, and industrial machinery exposed to moisture and chemicals. The standard split lock washer type creates continuous spring tension against both the bolt head and mating surface, effectively preventing back-off in dynamic loading conditions. With precise dimensions (0.45" ID, 0.776" OD, 0.109" thickness) engineered specifically for 7/16" screw size applications, these components eliminate guesswork during assembly while providing reliable, long-term fastening security in critical joints and structural connections.

Specification Summary & Compliance

This split lock washer features inch system dimensions with 0.45" inner diameter, 0.776" outer diameter, and 0.109" thickness, manufactured to ASME B18.21.1 specifications for dimensional accuracy and performance reliability. The component achieves Rockwell C38 hardness for optimal spring properties and meets comprehensive compliance standards including RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) with current SVHC compliance as of January 17, 2023, ensuring environmental safety without compromising industrial durability.